![](http://datasheet.mmic.net.cn/370000/UPD784021GC-3B9_datasheet_16743916/UPD784021GC-3B9_3.png)
3
m
PD784020, 784021
FUNCTIONS
m
PD784020
m
PD784021
113
8 bits
¥
16 registers
¥
8 banks, or 16 bits
¥
8 registers
¥
8 banks (memory mapping)
160 ns/320 ns/640 ns/1280 ns (at 25 MHz)
None
512 bytes
2048 bytes
Program and data: 1M byte
46
8
34
4
32
8
8
4 bits
¥
2, or 8 bits
¥
1
Timer/counter 0:
(16 bits)
Timer register
¥
1
Capture register
¥
1
Compare register
¥
2
Pulse output capability
Y
Toggle output
Y
PWM/PPG output
Y
One-shot pulse output
Pulse output capability
Y
Real-time output (4 bits
¥
2)
Timer/counter 1:
(8/16 bits)
Timer register
¥
1
Capture register
¥
1
Capture/compare register
¥
1
Compare register
¥
1
Timer register
¥
1
Capture register
¥
1
Capture/compare register
¥
1
Compare register
¥
1
Timer register
¥
1
Compare register
¥
1
Timer/counter 2:
(8/16 bits)
Pulse output capability
Y
Toggle output
Y
PWM/PPG output
Timer 3
(8/16 bits)
12-bit resolution
¥
2 channels
UART/IOE (3-wire serial I/O) : 2 channels (incorporating baud rate generator)
CSI (3-wire serial I/O, SBI)
: 1 channel
8-bit resolution
¥
8 channels
8-bit resolution
¥
2 channels
1 channel
HALT/STOP/IDLE mode
:
23 (16 internal, 7 external (sampling clock variable input: 1)) + BRK instruction
BRK instruction
1 internal, 1 external
15 internal, 6 external
Y
4-level programmable priority
Y
3 operation statuses: vectored interrupt, macro service, context switching
V
DD
= 2.7 to 5.5 V
80-pin plastic QFP (14
¥
14 mm)
80-pin plastic TQFP (fine pitch) (12
¥
12 mm): for the
m
PD784021 only
Note
Additional function pins are included in the I/O pins.
ROM
RAM
Total
Input
Input/output
Output
Pins with pull-
up resistor
LED direct
drive outputs
Transistor
direct drive
H
H
Product
Item
Number of basic instructions
(mnemonics)
General-purpose register
Minimum instruction execution
time
Internal
memory
Memory space
I/O ports
Additional
function
pins
Note
Real-time output ports
Timer/counter
PWM outputs
Serial interface
A/D converter
D/A converter
Watchdog timer
Standby
Interrupt
Source
Software
Nonmaskable
Maskable
Supply voltage
Package