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
I-48 EPSON S1C62740 TECHNICAL HARDWARE
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver)
(1) Segment allocation
The LCD driver has a segment decoder built-in, and the data bit
of the optional address in the display memory area (80H–9FH)
can be allocated to the optional segment. This makes design
easy by increasing the degree of freedom with which the liquid
crystal panel can be designed.
The allocated segment displays when the bit for the display
memory is set to "1", and goes out when bit is set to "0".
Figure 4.7.5 shows an example of the relationship between the
LCD segments (on the panel) and the display memory for the
case of 1/3 duty.
Mask option
(segment allocation)
Fig. 4.7.5
Segment allocation
aa'
f
f'
g'
g
ee'
d
d'
p'
p
c'
b'
b
c
SEG10 SEG11 SEG12
Common 0
Common 1
Common 2
9AH
9BH
9CH
9DH
Address
d
p
d'
p'
D3
c
g
c'
g'
D2
b
f
b'
f'
D1
a
e
a'
e'
D0
Data
Display memory allocation
SEG10
SEG11
SEG12
9A, D0
(a)
9A, D1
(b)
9D, D1
(f')
9B, D1
(f)
9B, D2
(g)
9A, D2
(c)
9B, D0
(e)
9A, D3
(d)
9B, D3
(p)
Pin address allocation
Common 0 Common 1 Common 2