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LC72321 Datasheet

  • LC72321

  • Single-Chip Microcontroller with PLL and LCD Driver

  • 235.29KB

  • 13頁(yè)

  • SANYO

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Ordering number : EN4796A
CMOS LSI
LC72321
Single-Chip Microcontroller with PLL
and LCD Driver
Preliminaly
Overview
The LC72321 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.
鈥?Voltage detection type reset circuit
鈥?One 6-bit A/D converter
鈥?Two 8-bit D/A converters (PWM)
鈥?One external interrupt (The LC72321 provides an
external interrupt, and internal interrupt and a serial I/O
interrupt, one of which can be selected under program
control.)
鈥?Hold mode for RAM backup
鈥?Sense FF for hot/cold startup determination
鈥?PLL: 4.5 to 5.5 V
鈥?CPU: 3.5 to 5.5 V
鈥?RAM: 1.3 to 5.5 V
Functions
鈥?/div>
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鈥?/div>
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Serial I/O
Built-in timer interrupts: 80 碌s, 1 ms, 2 ms and 5 ms
Stack: Eight levels
Beep control: Six beep tones (2.08, 2.25, 2.5, 3.0, 3.75,
and 4.17 kHz)
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): 16 bits
脳
4095
Data memory (RAM): 4 bits
脳
256
All instructions are single-word instructions
Cycle time: 2.67 碌s, 13.33 碌s, or 40.00 碌s (option)
Unlock FF: 0.55 碌s detection, 1.1 碌s 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)
Package Dimensions
unit: mm
3174-QIP80E
[LC72321]
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鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
SANYO: QIP80E
鈥?/div>
鈥?/div>
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
83194TH (OT) No. 4796-1/13

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