MSM82C53-2GS Oki Semiconductor, MSM82C53-2GS Datasheet

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MSM82C53-2GS

Manufacturer Part Number
MSM82C53-2GS
Description
Manufacturer
Oki Semiconductor
Datasheet

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Part Number:
MSM82C53-2GS
Manufacturer:
OKI
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20 000
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MSM82C53-2GS-K-7
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E2O0018-27-X2
This version: Jan. 1998
¡ Semiconductor
¡ Semiconductor
MSM82C53-2RS/GS/JS
Previous version: Aug. 1996
MSM82C53-2RS/GS/JS
CMOS PROGRAMMABLE INTERVAL TIMER
GENERAL DESCRIPTION
The MSM82C53-2RS/GS/JS is programmable universal timers designed for use in
microcomputer systems. Based on silicon gate CMOS technology, it requires a standby current
of only 100 mA (max.) when the chip is in the nonselected state. During timer operation, power
consumption is still very low only 8 mA (max.) at 8 MHz of current required.
The device consists of three independent counters, and can count up to a maximum of 8 MHz
(MSM82C53-2). The timer features six different counter modes, and binary count/BCD count
functions. Count values can be set in byte or word units, and all functions are freely
programmable.
FEATURES
• Maximum operating frequency of 8 MHz (MSM82C53-2)
• High speed and low power consumption achieved through silicon gate CMOS technology
• Completely static operation
• Three independent 16-bit down-counters
• 3 V to 6 V single power supply
• Six counter modes available for each counter
• Binary and decimal counting possible
• 24-pin Plastic DIP (DIP24-P-600-2.54): (Product name: MSM82C53-2RS)
• 28-pin Plastic QFJ (QFJ28-P-S450-1.27): (Product name: MSM82C53-2JS)
• 32-pin Plastic SSOP(SSOP32-P-430-1.00-K): (Product name: MSM82C53-2GS-K)
1/19

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MSM82C53-2GS Summary of contents

Page 1

... Binary and decimal counting possible • 24-pin Plastic DIP (DIP24-P-600-2.54): (Product name: MSM82C53-2RS) • 28-pin Plastic QFJ (QFJ28-P-S450-1.27): (Product name: MSM82C53-2JS) • 32-pin Plastic SSOP(SSOP32-P-430-1.00-K): (Product name: MSM82C53-2GS-K) This version: Jan. 1998 MSM82C53-2RS/GS/JS Previous version: Aug. 1996 ...

Page 2

... Semiconductor FUNCTIONAL BLOCK DIAGRAM V CC GND Data Counter Bus Buffer #0 8 Read/ Counter Write Logic #1 Counter Control Word Register #2 Internal Bus MSM82C53-2RS/GS/JS CLK 0 GATE 0 OUT 0 CLK 1 GATE 1 OUT 1 CLK 2 GATE 2 OUT 2 2/19 ...

Page 3

... Semiconductor PIN CONFIGURATION (TOP VIEW) 24 pin Plastic DIP 32 pin Plastic SSOP 28 pin Plastic QFJ MSM82C53-2RS/GS/ CLK OUT GATE GND ...

Page 4

... I 0 £ ≥ V Standby Supply I V CCS Current V t Operating Supply CLK Current Rating Condition MSM82C53-2RS MSM82C53-2GS –0 Respect –0 GND –0 — – 150 0.9 0 25°C Condition Operating Frequency 2.6 MHz Symbol Min ...

Page 5

... — 120 ODG t — 150 OD t — 180 AD = 0.8 V and V = 2.2 V for both inputs and outputs. H MSM82C53-2RS/GS/ –40 to +85°C) Unit Condition ns ns Read Cycle Write Cycle 150 ...

Page 6

... WR Read Timing , High Impedance Clock & Gate Timing CLK t PWH t GATE OUT Valid t CLK t PWL ODG MSM82C53-2RS/GS/ High Impedance 6/19 ...

Page 7

... D 0 state where neither writing nor reading can be executed. Internal registers, however, remain unchanged. Data can be transferred from MSM82C53-2 to CPU when this pin is at low level. Data can be transferred from CPU to MSM82C53-2 when this pin is at low level. One of the three internal counters or the control word register is selected ...

Page 8

... DESCRIPTION OF OPERATION MSM82C53-2 functions are selected by a control word from the CPU. In the required program sequence, the control word setting is followed by the count value setting and execution of the desired timer operation. Control Word and Count Value Program Each counter operation mode is set by control word programming ...

Page 9

... Although the count values may be set in the three counters in any sequence after the control word has been set in each counter, count values must be set consecutively in the LSB - MSB order in any one counter. MSM82C53-2RS/GS/JS Set Contents Set Contents Set Contents ...

Page 10

... The minimum and maximum count values which can be counted in each mode are listed below. Mode MIn. Max, 0 executes 10000H count (ditto in other modes cannot be counted executes 10001H count n1: Counter #1 address n2: Counter #2 address n3: Control word register address Remarks — — — MSM82C53-2RS/GS/JS 10/19 ...

Page 11

... If a new count value is written during counting, the new count value is reflected immediately after the change (“H” to “L” or “L” to “H”) in the next counter output to be executed. The counting operation at the gate input is done the same as in mode 2. MSM82C53-2RS/GS/JS 11/19 ...

Page 12

... Counting not possible 2 (2) Counter output forced to "H" level (1) Counting not possible 3 (2) Counter output forced to "H" level 4 Counting not possible 5 MSM82C53-2RS/GS/JS Rising Edge "H" Level Counting possible (1) Start of counting (2) Retriggering Start of counting Counting possible Start of counting Counting possible ...

Page 13

... MSM82C53-2RS/GS/ 13/19 ...

Page 14

... Semiconductor Reading of Counter Values All MSM82C53-2 counting is down-counting, the counting being in steps mode 3. Counter values can be read during counting by (1) direct reading, and (2) counter latching (“read on the fly”). • Direct reading Counter values can be read by direct reading operations. ...

Page 15

... High-speed device (New) M80C85AH M80C86A-10 M80C88A-10 M82C84A-2 M81C55-5 M82C37B-5 M82C51A-2 M82C53-2 M82C55A-2 Remarks Low-speed device (Old) M80C85A/M80C85A-2 8bit MPU 16bit MPU M80C86A/M80C86A-2 8bit MPU M80C88A/M80C88A-2 Clock generator M82C84A/M82C84A-5 RAM.I/O, timer M81C55 DMA controller M82C37A/M82C37A-5 USART M82C51A Timer M82C53-5 PPI M82C55A-5 MSM82C53-2RS/GS/JS 15/19 ...

Page 16

... As shown above, the characteristics of these devices are identical under the same test condition. The MSM82C53-2 satisfies the characteristics of the MSM82C53-5. 3-2) AC Characteristics Parameter Address Hold Time After Write Data Input Hold Time After Write Clock Cycle Time As shown above, the MSM82C53-2 satisfies the characteristics of the MSM82C53-5. Symbol MSM82C53 maximum ...

Page 17

... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSM82C53-2RS/GS/JS (Unit : mm) Package material Epoxy resin ...

Page 18

... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSM82C53-2RS/GS/JS (Unit : mm) Package material Epoxy resin ...

Page 19

... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSM82C53-2RS/GS/JS (Unit : mm) Package material Epoxy resin ...

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