IN5732 Datasheet, PDF (1/4 Pages) Integral Corp. – 4BIT SINGLE CHIP MICROCOMPUTER

IN5732
4BIT SINGLE CHIP MICROCOMPUTER
The IN5732 is a CMOS 4-bit single chip microcomputer that operate on low voltage,
very low current and contain LCD drivers. They also contain a 4 bit parallel processing
ALU, a program memory ROM, many LCD segment outputs, a prescaler, an oscillator.
The IN5732 is especially suited for use in high-grade timepieces, time controllers,
electronic calculators, LCD games with timepiece. The IN5732 is especially suited for use
in audio equipment, copiers, facsimiles with LCD and sub CPU applications.
FEATURES
Supply voltage
1.5V or 3V (Mask option-selectable)
Current dissipation 3.0 uA Typ. (Ag Battery version, 32KHz crystal oscillation, during
timekeeping operation)
1.5 uA Typ. (Li Battery version, 32KHz crystal oscillation, during
timekeeping operation)
Oscillation
Crystal oscillation for timekeeping (32.768 KHz); or CR oscillator.
Output pins for
27 pins
LCD drive
Drivable LCD panel
Number of Drivable LCD segment
1/2 bias
1/3 duty
81 segments
1/2 bias
1/2 duty
54 segments
Static
27 segments
On chip melody 3 octaves (the melody length is solfware-controlled. One Musical note
function
requires one byte.)
Number of input 8
pins
Number of out
3 pins (Output dedicated to alarm: 2 pins, general-purpose output: 1
pins
pin).
Possible to use LCD panel drive output pins as output pin-only ports (Mask option-
selectable)
ROM
2048 X 8 bits
RAM
48 X 4 bits
Cycle Time
CR oscillation at 65 Hz
60us
32.768 KHz crystal
122us
On chip step-up / step down circuit
Instruction set
92 instructions
Table read
instruction
1 level subroutine nesting on-chip 15 bit divider for timekeeping (delivers an overflow single
every 64ms/500ms when a 32.768 KHz crystal is used).
HALT function
1