LC7232/LC72322 Single-Chip Microcontroller with Built-In LCD Driver and PLL Circuits

Overview
The LC7232/LC72322 is a single-chip microcontroller for use in electronic tuning applications. It includes on chip both LCD drivers and a PLL circuit that can operate at up to 150 MHz. It features a large-capacity ROM, a highly efficient instruction set, and powerful hardware.

Stack: Eight levels
Fast programmable divider
General-purpose counters: HCTR for frequency measurement and LCTR for frequency or period measurement
LCD driver for displays with up to 56 segments (1/2 duty, 1/2 bias)
Program memory (ROM): 4 k words by 16 bits
Data memory (RAM): 256 4-bit digits
All instructions are single-word instructions
Cycle time: 2.67 盜, 13.33 盜, or 40.00 盜 (option)
Unlock FF: 0.55 盜 detection, 1.1 盜 detection
Timer FF: 1 ms, 5ms, 25ms, 125ms
Input ports*: One dedicated key input port and one high-breakdown voltage port
Output ports*: Two dedicated key output ports, one high-breakdown voltage open-drain port Two CMOS output ports (of which one can be switched to be used as LCD driver
outputs) Seven CMOS output ports (mask option switchable to use as LCD ports)
I/O ports*: One switchable between input and output in four-bit units and one switchable between input and output in one-bit units Note: * Each port consists of four bits.
Program runaway can be detected and a special address set (Programmable watchdog timer).
Voltage detection type reset circuit
One 6-bit A/D converter
Two 8-bit D/A converters (PWM)
One external interrupt
Hold mode for RAM backup
Sense FF for hot/cold startup determination
PLL: 4.5 to 5.5 V
CPU: 3.5 to 5.5 V
RAM: 1.3 to 5.5 V
80-pin QIP

General programming guidance of LC7232 devices with Seung Yong CPU SYSTEM SY202.
The processors SYSTEM 202 with label Seung Yong are customized mask-programmed CPU's on base of the LC 72322 CPU from Sanyo.
Those in the following specified possibilities apply only to CPU's with the above Seung Yong designation and not to others! Programming are those pin 32, 33, 34, 35 of the CPU.
The indicated bridges must be manufactured from the links indicated in each case to +5 Volt or GND.

Consider please:
With 120 to 400 channel programming must be in the device absolutely the EMG/CH 9-Taste wired, because this becomes with many channel operation automatically the BAND selection button!

SY202 Block Diagram

General programming guidance of LC7232 devices with Seung Yong CPU SYSTEM SY204.
The processors SYSTEM 204 with label Seung Yong are customized mask-programmed CPU's on base of the LC 72322 CPU from Sanyo.
Those in the following specified possibilities apply only to CPU's with the above Seung Yong designation and not to others!

SY204 Block Diagram

This counter shows the number of hits since the 29th January 2000

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