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User’s Manual U11302EJ4V0UM
CHAPTER 1 OUTLINE
1.1 Features
Internal high-capacity ROM and RAM
Item
Program Memory
Data Memory
Part
ROM
PROM
Internal High-
Buffer RAM
VFD Display
Internal
Number
Speed RAM
RAM
Expansion RAM
µ
PD780204
32 KB
—
1024 bytes
64 bytes
80 bytes
None
µ
PD780204A
µ
PD780205
40 KB
—
µ
PD780205A
µ
PD780206
48 KB
—
1024 bytes
µ
PD780208
60 KB
—
µ
PD78P0208
—
60 KB
Note 1
1024 bytes
Note 2
Notes 1.
32, 40, 48, or 60 KB can be selected by setting the internal memory size switching register (IMS).
2.
0 or 1024 bytes can be selected by setting the internal expansion RAM size switching register (IXS).
Minimum instruction execution time can be changed from high speed (0.4
µ
s: @ 5.0 MHz operation with main
system clock) to ultra-low speed (122
µ
s: @ 32.768 kHz operation with subsystem clock)
74 I/O ports
VFD controller/driver: 53 display outputs in total
• Segments: 9 to 40
• Digits: 2 to 16
8-bit resolution A/D converter: 8 channels
• Power supply voltage (AV
DD
= 4.0 to 5.5 V)
Serial interface: 2 channels
• 3-wire serial I/O/SBI/2-wire serial I/O mode: 1 channel
• 3-wire serial I/O mode (automatic transmit/receive function): 1 channel
Timer: 5 channels
• 16-bit timer/event counter: 1 channel
• 8-bit timer/event counter: 2 channels
• Watch timer: 1 channel
• Watchdog timer: 1 channel
15 vectored interrupt sources
One test input
Two types of on-chip clock oscillators (for main and subsystem clocks)
Power supply voltage: V
DD
= 2.7 to 5.5 V
Содержание mPD780208 Subseries
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