30
CHAPTER 1 OUTLINE
1.8 Outline of Function
Part Number
Item
µ
PD780973(A)
µ
PD78F0974
Internal memory
ROM
24 Kbytes
32 Kbytes
(Mask ROM)
(Flash memory)
Internal high-speed RAM
768 bytes
1024 bytes
EEPROM
256 bytes
LCD display RAM
20
×
4 bits
General register
8 bits
×
32 registers (8 bits
×
8 registers
×
4 banks)
Minimum instruction execution time
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)
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
: 1 channel
• 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
Meter control
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
) = 5 V
±
10%
Operating ambient temperature
T
A
= –40 to +85˚C
Package
80-pin plastic QFP (14
×
20 mm)
Содержание mPD780973 Series
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