Specifications
Table Of Contents
- Technical Hardware
- 1 OVERVIEW
- 2 POWER SUPPLY AND INITIAL RESET
- 3 CPU, ROM, RAM
- 4 PERIPHERAL CIRCUITS AND OPERATION
- 4.1 Memory Map
- 4.2 Resetting Watchdog Timer
- 4.3 Oscillation Circuit
- 4.4 Input Ports (K00–K03, K10)
- 4.5 Output Ports (R00–R03)
- 4.6 I/O Ports (P00–P03, P10–P13, P20–P23)
- 4.7 LCD Driver (COM0–COM3, SEG0–SEG31)
- 4.8 Clock Timer
- 4.9 Stopwatch Timer
- 4.10 Programmable Timer
- 4.11 Serial Interface (SIN, SOUT, SCLK, SRDY)
- 4.12 A/D Converter
- 4.13 General-purpose Operation Amplifier (AMP)
- 4.14 SVD (Supply Voltage Detection) Circuit
- 4.15 Interrupt and HALT/SLEEP
- 5 SUMMARY OF NOTES
- 6 DIAGRAM OF BASIC EXTERNAL CONNECTIONS
- 7 CHARACTERISTICS
- 8 PACKAGE
- 9 PAD LAYOUT
- Technical Software
- 1 INTRODUCTION
- 2 BLOCK DIAGRAM
- 3 PROGRAM MEMORY (ROM)
- 4 DATA MEMORY
- 5 INITIAL RESET
- 6 PERIPHERAL CIRCUITS
- 6.1 Watchdog Timer
- 6.2 OSC3
- 6.3 Input Ports (K00–K03 and K10)
- 6.4 Output Ports (R00–R03)
- 6.5 I/O Ports (P00–P03, P10–P13 and P20–P23)
- 6.6 LCD Driver
- 6.7 Clock Timer
- 6.8 Stopwatch Timer
- 6.9 Programmable Timer
- 6.10 Serial Interface Circuit
- 6.11 Amplifier
- 6.12 SVD (Supply Voltage Detection) Circuit
- 6.13 A/D Converter
- 6.14 Sleep
- 6.15 Interrupt
- 7 SUMMARY OF NOTES
- APPENDIX
S1C62740 TECHNICAL HARDWARE EPSON I-29
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Input Ports)
(2) K10 interrupt
Figure 4.4.4 shows the configuration of K10 interrupt circuit.
Data bus
Input comparison
register (DFK10)
K10
Interrupt
request
Interrupt mask
register (EIK1)
Address
Address
Address
Address
SLEEP
cancellation
Interrupt factor
flag (IK1)
The input port K10 can generate interrupts for systems other then
K00–K03. The input comparison register (DFK10) is also set to the
K10 port and can specify the timing for generating an interrupt.
The interrupt generated timing is also the same as for K00–K03
and when the content of the K10 input and the input comparison
register changes from matching to no matching an interrupt is
generated.
When the interrupt is generated, the interrupt factor flag (IK1) is
set to "1".
The interrupt mask register (EIK1) enables the interrupt mask to
be selected for K10. However, the interrupt factor flag is set to "1"
when the interrupt condition is established regardless of the
interrupt mask register setting.
The K10 input interrupt is also used for cancellation of the SLEEP
mode.
Fig. 4.4.4
Input interrupt circuit configuration
(K10)
Internal pull up resistor can be selected for each of the five bits of
the input ports (K00–K03, K10) with the input port mask option.
When you have selected "Gate direct", take care that the floating
status does not occur for the input. Select "With pull up resistor"
for input ports that are not being used.
Mask option