30
User’s Manual U15798EJ2V0UD
CHAPTER 1 OUTLINE
1.1 Features
•
Internal memory
Type
Program Memory
Data Memory
LCD Display RAM
Part Number
(ROM/Flash Memory)
High-Speed RAM
Expansion RAM
µ
PD780343, 780353,
24 KB
512 bytes
512 bytes
40
×
8 bits
780343Y, 780353Y
µ
PD780344, 780354,
32 KB
780344Y, 780354Y
µ
PD78F0354, 78F0354Y
32 KB
Note
1,024 bytes
Note
The capacity of on-chip flash memory can be changed by means of the memory size switching register (IMS).
•
Minimum instruction execution time changeable from high speed (0.2
µ
s: @10 MHz operation with main system
clock) to ultra-low speed (122
µ
s: @32.768 kHz operation with subsystem clock)
•
A circuit to multiply the subsystem clock by 4 is selectable (30.52
µ
s: @131 kHz operation = subsystem clock 32.768
kHz operation
×
4)
•
I/O port: 66 (N-ch open-drain: 6 (middle voltage: 4))
•
10-bit resolution A/D converter: 8 channels (
µ
PD780353, 780354, 78F0354, 780353Y, 780354Y, 78F0354Y only)
•
8-bit resolution A/D converter:
8 channels (
µ
PD780343, 780344, 780343Y, 780344Y only)
•
LCD controller/driver
• Segment signal output: 40 max., common signal output: 4 max.
• LCD reference voltage generator: booster type (
×
3 only)
• Blinking display possible (blinking interval can be selected: 0.5 s or 1 s)
•
Serial interface
• 3-wire serial I/O mode (SIO3): 1 channel
• 3-wire serial I/O mode (CSI1): 1 channel
• UART:
1 channel
• I
2
C bus:
1 channel (
µ
PD780344Y, 780354Y Subseries only)
•
Timer
• 16-bit timer/event counter: 1 channel
• 8-bit timer/event counter:
3 channels
• 8-bit timer:
1 channel
• Watch timer:
1 channel
• Watchdog timer:
1 channel
•
ROM correction
•
Vectored interrupt sources: 26
•
Power supply voltage: V
DD
= 1.8 to 5.5 V
Содержание mPD780344 Series
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