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LC72322R

Part Number	LC72322R
Manufacturer	Sanyo Semicon Device
Description	Single-Chip Microcontroller
Published	Mar 22, 2005
Detailed Description	Ordering number : EN5378 CMOS LSI LC72322R, 72323R Single-Chip Microcontroller with PLL and LCD Driver Overview The L...
Datasheet	LC72322R PDF File

Overview

Ordering number : EN5378 CMOS LSI LC72322R, 72323R Single-Chip Microcontroller with PLL and LCD Driver Overview The LC72322R and LC72323R are single-chip microcontrollers for use in electronic tuning applications.
These ICs include on chip both LCD drivers and a PLL circuit that can operate at up to 150 MHz.
The LC72322R and LC72323R feature that these ICs are reversed pinassignment versions of LC72322 and LC72323 respectively and have the equal functions and specifications to theirs respectively.
• • • • • • • • • • • • • Functions • 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): 4095 (8 KB) 16-bit digits: LC72322R 3071 (6 KB) 16-bit digits: LC72323R • Data memory (RAM): 256 4-bit digits • All instructions are single-word instructions • Cycle time: 2.
67 µs, 13.
33 µs, or 40.
00 µs (option) • Unlock FF: 0.
55 µs detection, 1.
1 µs 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 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): LC72322R only 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 LC72P321R as OTP used Package: QIP80DR Package Dimensions unit: mm 3223...

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