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UM8253

Part Number	UM8253
Manufacturer	UMC
Description	Programmable Interval Timer
Published	Jan 31, 2017
Detailed Description	(l)UMC UM8253/ UM8253-5 Features • MCS-85™ compatible UM8253-5 • 3 independent 16-bit counters • DC to 2.6 MHz • Prog...
Datasheet	UM8253 PDF File

Overview

(l)UMC UM8253/ UM8253-5 Features • MCS-85™ compatible UM8253-5 • 3 independent 16-bit counters • DC to 2.
6 MHz • Programmable counter modes • Count binary or BCD • Single +5V supply General Description The UM8253 is a programmable counter timer device designed for use as an microcomputer peripheral.
It uses NMOS technology with a single +5V supply and is packaged in a 24-pin plastic DIP.
It is organized as 3 independent 16-bit counters, each with a count rate of up to 2.
6 MHz.
All modes of operation are software programmable.
*MCS-85™ is the trademark of Intel microsystem.
Pin Configuration Block Diagram 07 06 Os 04 03 O2 0, 00 ClK 0 OUT 0 GATE 0 GNO VCC WR RO CS Al Ao ClK 2 OUT.
2 GATE 2 ClK 1 GATE 1 OUT 1 .
07-00 Ao AI Cs READ/ WRITE LOGIC 7-143 Absolut-e Maximum Ratings* Ambient Temperature Under Bias TA .
O°C to 70°C Storage Tempel'ature TSTG -65°C to +l50°C Voltage on Any Pin with Respect to Ground .
, .
-0.
5V to +7...

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