34
CHAPTER 1 OUTLINE
Preliminary User’s Manual U14581EJ3V0UM00
1.8 Outline of Function
Part Number
Item
µ
PD780851(A)
µ
PD780852(A)
µ
PD78F0852
Internal memory
ROM
32 Kbytes
40 Kbytes
40 Kbytes
(Mask ROM)
(Mask ROM)
(Flash memory)
High-speed RAM
1,024 bytes
Expanded RAM
512 bytes
LCD display RAM
20
×
4 bits
General register
8 bits
×
32 registers (8 bits
×
8 registers
×
4 banks)
Minimum instruction execution time
On-chip minimum instruction execution timer variable function
0.24
µ
s/0.48
µ
s/0.95
µ
s/1.91
µ
s/3.81
µ
s (in operation at 8.38 MHz)
Instruction set
• 16-bit operation
• Multiply/divide (8 bits
×
8 bits, 16 bits
÷
8 bits)
• Bit manipulation (set, reset, test, and Boolean operation)
• BCD adjust, etc.
I/O port
Total:
56
(including pins shared with segment
• CMOS input:
5
signal output)
• CMOS output:
16
• CMOS input/output:
35
A/D converter
• 8-bit resolution
×
5 channels
• Power-fail detection function
LCD controller/driver
• Segment signal outputs: 20 max.
• Common signal outputs: 4 max.
• Bias:
1/3 bias only
Serial interface
• 3-wire serial I/O mode:
2 channels
• UART mode:
1 channel
Timer
• 16-bit timer:
1 channel
• 8-bit timer:
1 channel
• 8-bit timer/event counter: 2 channels
• Watch timer:
1 channel
• Watchdog timer:
1 channel
Timer outputs
2 (8-bit PWM output: 2)
Meter controller/driver
PWM output (8-bit resolution): 16
Can set pulse width with a precision of 8 + 1 bits with 1-bit addition function
Sound generator
1 channel
Clock output
65.5 kHz, 131 kHz, 262 kHz, 524 kHz, 1.04 MHz, 2.09 MHz, 4.19 MHz,
8.38 MHz (@ 8.38-MHz operation with main system clock)
Vectored interrupt
Maskable
Internal: 16, External: 3
source
Non-maskable
Internal: 1
Software
1
Power supply voltage
V
DD
= SMV
DD
= 4.0 to 5.5 V
Operating ambient temperature
T
A
= –40˚C to +85˚C
Package
80-pin plastic QFP (14
×
14 mm)
Содержание mPD780852 Series
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