M34551T2-MCU MCU Board for PC4504 Emulator System User's Manual Rev.1.
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Contents Preface ....................................................................................................................................4 1. Precautions for Safety ......................................................................................................... 5 1.1 Safety Symbols and Meanings ..............................................................................5 2. Handling Precautions ...........................................................................................
Preface This user's manual describes the specifications of the M34551T2-MCU emulator board for Renesas 4551 and 4555 groups of 4-bit single-chip microcomputers. The M34551T2-MCU is the MCU board for the PC4504 emulator. For the PC4504 emulator main unit and the M3T-PD45 emulator debugger, refer to their user's manuals.
1. Precautions for Safety In both the user's manual and on the product itself, several icons are used to insure proper handling of this product and also to prevent injuries to you or other persons, or damage to your properties. This chapter describes the precautions which should be taken in order to use this product safely and properly. Be sure to read this chapter before using this product. 1.
WARNING Warning for Installation: • Do not set this product in water or areas of high humidity. Make sure that the main unit does not get wet. Spilling water or some other liquid into the main unit can cause an unrepairable damage. Warning for Use Environment: • This equipment is to be used in an environment with a maximum ambient temperature of 35 °C. Care should be taken that this temperature is not exceeded. CAUTION Cautions to be Taken for This Product: • Do not disassemble or modify this product.
IMPORTANT Notes on Differences between Actual MCU and Emulator: • Emulator operation differs from emulation of a mask MCU, as listed below. For details refer to "Chapter 6. Precautions to be Taken When Debugging". (1) Reset condition (2) Initial values of internal resource data at power-on (3) Internal RAM and ROM capacities, etc.
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2. Handling Precautions When using the M34551T2-MCU board, pay attention to the following: (1) About the emulator To use the M34551T2-MCU board, you always need to install it on the PC4504 emulator main unit. (2) About the MCU board installation Before installing (and removing) the MCU board, always be sure to power off the PC4504 emulator main unit and unplug its power cord from the outlet. For details on how to install and remove the MCU board, see "Chapter 2. Set-up" in the PC4504 System User’s Manual.
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3. Contents of the M34551T2-MCU Package 3.1 Things to Check When Unpacking Table 3.1 shows the contents of the M34551T2-MCU package. When unpacking your M34551T2MCU package, check to see that all the following components are included. Table 3.
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4. M34551T2-MCU 4.1 Outline By using with the PC4504 emulator main unit, the M34551T2-MCU can make up an emulator system which can be operated by a personal computer. Figure 4.1 shows the development support system configuration. Figure 4.
4.2 Specifications Table 4.1 lists specifications of the M34551T2-MCU. Table 4.1 M34551T2-MCU Specifications Applicable MCUs M34551MX-XXXFP M34555MX-XXXFP Evaluation MCUs M34551E8FP (included) M34555M4-002FP (mounted) Maximum operating clock frequency 3V Medium-speed mode*1: 4.0 MHz High-speed mode: 1.0 MHz 5V Medium-speed mode*1: 8.0 MHz High-speed mode: 2.
4.3 Description of Switches The M34551T2-MCU board has nine switches. Figure 4.2 shows the positions of these switches. Tables 4.2 and 4.3 list the functions of the switches and the preset switch positions that are set before the MCU board is shipped from the factory. Figure 4.2 Positions of switches Table 4.2 Functions of switches (1/2) Label Description Switch position OFF ON OFF Does not connect the VDD of the M34551T2MCU to the VDD of the target system.
Table 4.3 Functions of the switches (2/2) Label Switch position Description OFF Does not connect the pullup resistor 68 kΩ to the port P10. ON Connects the pullup resistor 68 kΩ to the port P10. Factory-setting SW4 OFF Does not connect the pullup resistor 68 kΩ to the port P11. ON Connects the pullup resistor 68 kΩ to the port P11. OFF SW5 OFF Does not connect the pullup resistor 68 kΩ to the port P12. ON Connects the pullup resistor 68 kΩ to the port P12.
4.4 Description of Connectors The M34551T2-MCU board has eight connectors. Table 4.4 lists the functions of these connectors. Figure 4.3 shows the positions of connectors on the MCU board. Table 4.4 Connectors Function Connector J1 Connects the evaluation MCU bus. J2 Connects the monitor CPU bus. J3 Connects the target system. (100-pin) J4 Connects the external trigger signal. (2-pin) J5 Connects the evaluation board. J6 Connects the oscillator circuit board. (4-pin) J7, J8 Connects PCA7745.
(1) Connector J3 Table 4.5 lists the pin assignments of 100-wire half-pitch connector (J3) for connecting the PCA4029. And Figure 4.4 shows the connector J3 pin layout. Table 4.5 Pin assignments of connector J3 Line A Line B I/O Pin No. Line D Line C Pin No. Signal I/O Pin No.
(2) Connector J4 To use the external trigger signal as event input of trigger breaks or trace points, connect the 2wire cable (for external trigger signal) included with your M34551T2-MCU board to the connector J4. Connect the black clip of the external trigger cable to GND, and use the white clip for external trigger signal input. Table 4.6 lists the pin assignments of the connector J4. Table 4.6 Pin assignments of connector J4 Pin No.
Figure 4.6 Schematic circuit diagram of OSC-2 (4.
4.5 Connection to the Target System When connecting the M34551T2-MCU board to the target system: Connect the 50-wire normal-pitch cable included with the MCU board to the 50-pin dual-in-line pins on the target system. Following products are required for connection to the target system. (1) 100-wire half-pitch cable (40 cm) (2) PCA4029 pitch converter board (3) 50-wire normal-pitch cable (10 cm) Figure 4.7 depicts the M34551T2-MCU board connected to the target system using the 50-wire normal-pitch cable.
Table 4.8 50-wire normal-pitch cable pin assignments Pin No. Signal Pin No.
Some signals connected to the target system are emulated on the M34551T2-MCU board. For details, see "Chapter 7. Connection Circuit Diagram". • Pins connected directly to the target system (6 types, 24 lines) (1) SEG0 - SEG15 (2) COM0 - COM3 (3) CARR (4) D6* (5) D7* (6) VSS • Pins connected to the target system via emulation circuits, etc.
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5. Using as an Evaluation Board Mounting the EPROM containing the program and supplying power enables the M34551T2-MCU to be used as an evaluation board. Use to evaluate the functions that cannot be evaluated with the evaluation MCU of the 4551 Group. Use an evaluation MCU (OTP version) for 4551 Group evaluation. 5.1 System Configuration System configuration when using the M34551T2-MCU as an evaluation board is as shown in Figure 5.1. Figure 5.1 System configuration for using as evaluation board 5.
5.3 Mounting the Rubber Legs Mount the rubber legs (included) in the four corners of the board if using the M34551T2-MCU board as an evaluation board. Figure 5.3 shows the positions of the mounting holes and method of mounting the rubber legs. When mounting them, securely fasten the screws with a screwdriver, etc. Using the board without the rubber legs could result in damage of the M34551T2-MCU board and target system due to a short, etc. Figure 5.
5.4 Switch Settings The PCA7745 board is equipped with switch SW1 for setting the ROM type. Set switch SW1 according to the type of EPROM to be used as shown in Table 5.1. Table 5.1 Setting switch SW1 on PCA7745 Setting Device 256 M5M27C2566AK 512 M5M27C512ALK 5.5 Connection to the Target System For method of connecting the MCU board to the target system when using this product as an evaluation board, refer to "4.5 Connecting the MCU board to the Target System". 5.
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6. Precautions to Be Taken When Debugging 6.1 Reset The M34551T2-MCU uses 74AC14 for the reset signal input buffer, and electrical characteristics therefore differ from those of an actual chip. Table 6.1 lists the RESET signal input characteristics on the M34551T2-MCU. Table 6.1 RESET signal input characteristics Item Symbol H-level threshold voltage VP L-level threshold voltage VN Hysteresis voltage VH Voltage Min. Max. VCC=3.0 V - 2.2 V VCC=4.5 V - 3.2 V VCC=5.5 V - 3.9 V VCC=3.0 V 0.
6.4 Watchdog Timer The watchdog timer does not operate on the M34551T2-MCU board. Use an evaluation MCU (OTP version) to verify the watchdog timer-related operations. 6.5 Pullup Transistors Since the P1 port of the M34551T2-MCU contains emulation circuits, you cannot control the pullup transistors using the pullup control register PU0. When you want to use the internal pullup transistors, turn on switches SW4 to SW7 to activate the pullup resistors of the M34551T2-MCU.
6.7 Characteristics of I/O Ports Characteristics of Ports P0, P1, P2, D0 to D7 of the M34551T2-MCU differ from those of actual MCU, because the M34551T2-MCU have emulation circuit. Table 6.3 shows characteristics of the emulation ports. Table 6.3 Characteristics of emulation ports Port I/O Device Item VIH Input 74HC541 VIL P0, P1 Voltage Min. Max. Vcc=2.0 V 1.5 V - Vcc=4.5 V 3.15 V - Vcc=2.0 V - 0.5 V Vcc=4.5 V - 1.35 V - 250 µA - 40 mA - 0.4 V IOL=16 mA - 0.
6.8 Power-down Mode The power-down mode of the M34551T2-MCU operates differently from that of the actual MCUs. (1) Power-down operation of the M34551T2-MCU While with the actual MCUs the power-down mode works by the "EPOF" and "POF" instructions, with the M34551T2-MCU the power-down mode works only by the "POF" instruction. With the M34551T2-MCU, the "EPOF" instruction is invalid. Example program 6.1 RC INY EPOF POF • • Actual MCU The power-down mode works. M34551T2-MCU The power-down mode works.
6.9 Program Execution (G, GB) The PC4504 and the M34551T2-MCU’s hardware is subject to the following restrictions with respect to the operation of the program execution commands (G and GB). (1) Continuous description of instructions Hardware breakpoints set in a continuous description of instructions following one after another do not cause a break to occur in the continuous description of instructions.
(2) Skip instructions (e.g. SNZP, INY, DEY, SZB, SEAM, SZC and RTS) In cases when a skip instruction skips the next instruction, a breakpoint set in the skipped instruction does not cause execution to halt. (See Program examples 6.5 and 6.6) Program example 6.5 RC RC SZC SZC POINT: TABP POINTA: TAM 0 POINT: TABP POINTA: TAM • • 0 • • A breakpoint set at address POINT causes execution to halt immediately before address POINTA in only the case of the instruction shown on the right side.
6.10 External Trigger (1) External trigger input timing The latch timing of the external trigger is shown in Figure 6.2. Instruction Next instruction System clock XIN External trigger signal TRIG Figure 6.2 Latch timing of the external trigger signal (2) External trigger signal input characteristics Trigger breaks work according to the condition (leading edge/trailing edge) of signals input from the external trace cable.
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7. Connection Circuit Diagram Figure 7.1 shows the M34551T2-MCU connection circuit diagram. This circuit diagram depicts the M34551T2-MCU connection centering on circuits connected to the target system. Emulator control blocks and other similar circuits that are not connected to the target system are omitted in this diagram. : Connected to IC23-8. : Control signal Figure 7.
Appendix A. How to Request for Repair If your product is found faulty, follow the procedure below to send your product for repair. Customer Fill in the Repair Request Sheet included with this product, then send it along with this product for repair to your local distributor. Make sure that information in the Repair Request Sheet is written in as much detail as possible to facilitate repair.
M34551T2-MCU User's Manual Rev.1.
