UPD75328 Datasheet, PDF (62/66 Pages) NEC – 4-BIT SINGLE-CHIP MICROCOMPUTER

µPD75328
APPENDIX A. COMPARISON OF FEATURES BETWEEN µPD75328 AND µPD75308
Item
Name
µPD75328
µPD75308
ROM (Bytes)
8064
RAM (× 4 Bits)
512
General-Purpose
Register
• 4-bit manipulation: 8 × 4 banks
• 8-bit manipulation: 4 × 4 banks
Instruction Cycle
Selectable from 0.95 µs, 1.91 µs, 15.3 ms (main system clock: operating at 4.19 MHz) and
122 µs (subsystem clock: operating at 32.768 kHz)
Input/
Output
Port
COMS
Input
CMOS
Input/
Output
CMOS
Output
36
(44
max.)
8 (shared with
INT, SI, SO)
20 (4 lines can
directly drive
LED)
Can be pulled up
using software,
except for P00
4/8 (shared with segment output,
can be selected using software)
32
(40
max.)
8 (shared with
INT, SI, SO)
16 (4 lines can
directly drive
LED)
Can be pulled up
using software,
except for P00
4/8 (shared with segment output,
can be selected using software)
N-ch
Input/
Output
8 (can directly drive LED, can be
sustain with 10 V, and can be
pulled up by mask option)
8 (can directly drive LED, can be
sustain with 10 V, and can be
pulled up by mask option)
Timer/Counter
• Timer/event counter
• Basic interval timer
• Watch timer
Serial Interface
• Built-in NEC-standard serial bus interface (SBI)
• Normal clock synchronized serial interface is also possible
A/D Converter
6-channel analog input, 8-bit resolution
—
Vector Interrupt External: 3, internal: 3
Test Input
External: 1, internal: 1
Instruction Set
• Bit data set/reset/test/boolean operation
• 4-bit data transfer/arithmetic/increment/decrement/comparison
• 8-bit data transfer
Display Function
LCD controller
• Segment outputs: 20
(4/8 can be set for output port by using
software)
• Common outputs: 4
• Display mode
(static, 1/2, 1/3, 1/4)
• Built-in step-down resistor network for LCD
drive voltage supply (mask option)
LCD controller
• Segment outputs: 32
(4/8 can be set for output port by using
software)
• Common outputs: 4
• Display mode
(static, 1/2, 1/3, 1/4)
• Built-in step-down resistor network for LCD
drive voltage supply (mask option)
Operating Voltage
2.7 to 6.0 V
Package
80-pin plastic QFP ( 14mm)
80-pin plastic QFP (14×20 mm)
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