UPD784907 Datasheet, PDF (4/98 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLER

µPD784907, 784908
FUNCTIONS
Item
Part Number
µPD784907
µPD784908
Number of basic instructions
113
(mnemonics)
General-purpose register
8 bits × 16 registers × 8 banks, or 16 bits × 8 registers × 8 banks (memory mapping)
Minimum instruction execution
time
320 ns/636 ns/1.27 µs/2.54 µs (at 6.29 MHz)
160 ns/320 ns/636 ns/1.27 µs (at 12.58 MHz)
Internal
memory
ROM
RAM
96 K
3,584 bytes
128 K
4,352 bytes
Memory space
1 Mbyte with program and data spaces combined
I/O ports
Total
80
Input
8
Input/output
72
Additional LED direct
24
function
drive outputs
pins ^Note
Transistor
8
direct drive
N-ch open
4
drain
Real-time output ports
4 bits × 2, or 8 bits × 1
IEBus controller
Incorporated (simplified)
Timer/counter
Timer/counter 0:
(16 bits)
Timer register × 1
Capture register × 1
Compare register × 2
Pulse output capability
• Toggle output
• PWM/PPG output
• One-shot pulse output
Timer/counter 1:
(16 bits)
Timer register × 1
Capture register × 1
Capture/compare register × 1
Compare register × 1
Real-time output port
Timer/counter 2:
(16 bits)
Timer register × 1
Capture register × 1
Capture/compare register × 1
Compare register × 1
Pulse output capability
• Toggle output
• PWM/PPG output
Timer 3:
(16 bits)
Timer register × 1
Compare register × 1
Watch timer
Interrupt requests are generated at 0.5-second intervals. (A watch clock oscillator is
incorporated.)
Either the main clock (6.29 MHz/12.58 MHz) or watch clock (32.7 kHz) can be selected
as the input clock.
Clock output
Selectable from fCLK, fCLK/2, fCLK/4, fCLK/8, or fCLK/16 (can be used as a 1-bit output port)
PWM outputs
12-bit resolution × 2 channels
Serial interface
UART/IOE (3-wire serial I/O): 2 channels (on-chip baud rate generator)
CSI (3-wire serial I/O):
2 channels
A/D converter
8-bit resolution × 8 channels
Note Additional function pins are included in the I/O pins.
4
Data Sheet U11680EJ2V0DS00