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32
CHAPTER 1 OUTLINE
Preliminary User’s Manual U13420EJ2V0UM00
1.7 Outline of Function
Part Number
Item
µ
PD780065
µ
PD78F0066
Internal memory
ROM
40 Kbytes (Mask ROM)
48 Kbytes
Note
(Flash memory)
High-speed RAM
1024 bytes
Expansion RAM
4096 bytes
Buffer RAM
32 bytes
Memory space
64 Kbytes
General register
8 bits
×
32 registers (8 bits
×
8 registers
×
4 banks)
Minimum instruction execution time
Minimum instruction execution time changeable function
When main system
0.24
µ
s/0.48
µ
s/0.95
µ
s/1.91
µ
s/3.81
µ
s (@ 8.38-MHz operation)
clock selected
When subsystem
122
µ
s (@ 32.768-kHz operation)
clock selected
Instruction set
• 16-bit operation
• Multiply/divide (8 bits
×
8 bits, 16 bits
÷
8 bits)
• Bit manipulate (set, reset, test, and Boolean operation)
• BCD adjust, etc.
I/O port
CMOS I/O: 60
A/D converter
• 8-bit resolution
×
8 channels
• Low-voltage operation: AV
DD
= 2.7 to 5.5 V
Serial interface
• 3-wire serial I/O mode:
1 channel
• 3-wire serial I/O mode
(provided with automatic transmit/receive function): 1 channel
• 2-wire serial I/O mode:
1 channel
• UART mode:
1 channel
Timer
• 16-bit timer/event counter: 1 channel
• 8-bit timer/event counter:
2 channels
• Watch timer:
1 channel
• Watchdog timer:
1 channel
Timer output
Three outputs: (8-bit PWM output enable: 2)
Clock output
• 65.5 kHz, 131 kHz, 262 kHz, 524 kHz, 1.05 MHz, 2.10 MHz, 4.19 MHz, 8.38 MHz
(8.38 MHz with main system clock)
• 32.768 kHz (32.768 kHz with subsystem clock)
Vectored interrupt
Maskable
Internal: 14, External: 4
Non-maskable
Internal: 1
Software
1
Power supply voltage
V
DD
= 2.7 to 5.5 V
Operating ambient temperature
T
A
= –40 to +85
°
C
Package
80-pin plastic QFP (14
×
14 mm)
Note The capacity of internal flash memory can be changed by means of the memory size switching register (IMS).
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