Datasheet
Table Of Contents
- FEATURES
- DETAILED DESCRIPTION
- ORDERING INFORMATION
- Figure 1. Block Diagram
- PIN DESCRIPTION
- 80C32 COMPATIBILITY
- Figure 2. Comparative Timing of the DS80C320/DS80C323 and 80C32
- HIGH-SPEED OPERATION
- INSTRUCTION SET SUMMARY
- Table 1. Instruction Set Summary
- SPEED ADVANTAGE SUMMARY
- MEMORY ACCESS
- Figure 3. Typical Memory Connection
- STRETCH MEMORY CYCLE
- Table 2. Data Memory Cycle Stretch Values
- DUAL DATA POINTER
- 64-Byte Block Move without Dual Data Pointer
- 64-Byte Block Move with Dual Data Pointer
- PERIPHERAL OVERVIEW
- SERIAL PORTS
- TIMER-RATE CONTROL
- POWER-FAIL RESET
- POWER-FAIL INTERRUPT
- WATCHDOG TIMER
- Table 3. Watchdog Timeout Values
- INTERRUPTS
- Table 4. Interrupt Priority
- POWER MANAGEMENT
- IDLE MODE ENHANCEMENTS
- STOP MODE ENHANCEMENTS
- Figure 4. Ring Oscillator Startup
- TIMED ACCESS PROTECTION
- SPECIAL-FUNCTION REGISTERS
- Table 5. Special-Function Register Locations
- ELECTRICAL SPECIFICATIONS
- ABSOLUTE MAXIMUM RATINGS
- DC ELECTRICAL CHARACTERISTICS—DS80C320
- NOTES FOR DS80C320 DC ELECTRICAL CHARACTERISTICS
- TYPICAL ICC vs. FREQUENCY
- AC CHARACTERISTICS—DS80C320
- NOTES FOR DS80C320 AC ELECTRICAL CHARACTERISTICS
- MOVX CHARACTERISTICS—DS80C320
- DC ELECTRICAL CHARACTERISTICS—DS80C323
- NOTES FOR DS80C323 DC ELECTRICAL CHARACTERISTICS
- NOTES FOR DS80C323 DC ELECTRICAL CHARACTERISTICS (continued)
- AC ELECTRICAL CHARACTERISTICS—DS80C323
- NOTES FOR DS80C323 AC ELECTRICAL CHARACTERISTICS
- MOVX CHARACTERISTICS—DS80C323
- EXTERNAL CLOCK CHARACTERISTICS
- SERIAL PORT MODE 0 TIMING CHARACTERISTICS
- EXPLANATION OF AC SYMBOLS
- POWER-CYCLE TIMING CHARACTERISTICS
- NOTES FOR POWER CYCLE TIMING CHARACTERISTICS
- PROGRAM MEMORY READ CYCLE
- DATA MEMORY READ CYCLE
- DATA MEMORY WRITE CYCLE
- DATA MEMORY WRITE WITH STRETCH = 1
- DATA MEMORY WRITE WITH STRETCH = 2
- EXTERNAL CLOCK DRIVE
- SERIAL PORT MODE 0 TIMING
- POWER-CYCLE TIMING
- DATA SHEET REVISION SUMMARY
DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers
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DC ELECTRICAL CHARACTERISTICS—DS80C323
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Operating Supply Voltage V
CC
2.7 3.0 5.5 V 1
Power-Fail Warning Voltage V
PFW
2.6 2.7 2.8 V 1
Minimum Operating Voltage V
RST
2.5 2.6 2.7 V 1, 12
Supply Current Active Mode at 18MHz I
CC
10 mA 2
Supply Current Idle Mode at 18MHz I
IDLE
6 mA 3
Supply Current Stop Mode,
Bandgap Reference Disabled
I
STOP
0.1 µA 2
Supply Current Stop Mode,
Bandgap Reference Enabled
I
SPBG
40 µA 4, 10
Input Low Level V
IL
-0.3 +0.2 x V
CC
V 1
Input High Level
(Except XTAL1 and RST)
V
IH1
0.7 x V
CC
V
CC
+0.3 V 1
Input High Level XTAL1 and RST V
IH2
0.7 x V
CC
+0.25V
V
CC
+0.3 V 1
Output Low Voltage Ports 1, 3
at I
OL
= 1.6mA
V
OL1
0.4 V 1
Output Low Voltage Ports 0, 2,
PSEN
/ALE at I
OL
= 3.2mA
V
OL2
0.4 V 1, 5
Output High Voltage Ports 1, 3,
PSEN /ALE at I
OH
= -15µA
V
OH1
V
DD
-0.4V
V 1, 6
Output High Voltage Ports 1, 3
at I
OH
= -1.5mA
V
OH2
V
DD
-0.4V
V 1, 7
Output High Voltage Ports 0, 2,
PSEN /ALE at I
OH
= -2mA
V
OH3
V
DD
-0.4V
V 1, 5
Input Low Current Ports 1, 3 at 0.45V I
IL
-30 µA 11
Transition Current from 1 0,
Ports 1, 3 at 2V
I
TL
-400 µA 8
Input Leakage Port 0, Bus Mode I
L
-300 +300 µA 9
RST Pulldown Resistance R
RST
50 170
k
NOTES FOR DS80C323 DC ELECTRICAL CHARACTERISTICS
All parameters apply to both commercial and industrial temperature operation unless otherwise noted. Specifications to -40°C
are guaranteed by design and are not production tested. Device operating range is 2.7V to 5.5V. DC electrical specifications are
for operation 2.7V to 3.3V.
1. All voltages are referenced to ground.
2. Active mode current is measured with an 18MHz clock source driving XTAL1, V
CC
= RST = 3.3V, all other
pins disconnected.
3. Idle mode current is measured with an 18MHz clock source driving XTAL1, V
CC
= 3.3V, all other pins
disconnected.
4. Stop mode current measured with XTAL1 and RST grounded, V
CC
= 3.3V, all other pins disconnected.
5. When addressing external memory. This specification only applies to the first clock cycle following the
transition.