M82C54-2 Datasheet PDF - OKI electronic

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M82C54-2
OKI electronic

Part Number M82C54-2
Description CMOS PROGRAMMABLE INTERVAL TIMER
Page 23 Pages


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E2O0019-27-X2
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¡ Semiconductor¡ Semiconductor
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Previous version: Aug. 1996
MSM82C54-2RS/GS/JS
CMOS PROGRAMMABLE INTERVAL TIMER
GENERAL DESCRIPTION
The MSM82C54-2RS/GS/JS is a programmable universal timer designed for use in
microcomputer systems. Based on silicon gate CMOS technology, it requires a standby current
of only 10 mA (max.) when the chip is in the non-selected state. And during timer operation, the
power consumption is still very low with only 10mA (max.) of current required.
It consists of three independent counters, and can count up to a maximum of 10 MHz. 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 10 MHz (VCC=5 V)
• High speed and low power consumption achieved by silicon gate CMOS technology
• Completely static operation
• Three independent 16-bit down-counters
• Status Read Back Command
• Six counter modes available for each counter
• Binary and decimal counting possible
• 24-pin Plastic DIP (DIP24-P-600-2.54): (Product name: MSM82C54-2RS)
• 28-pin Plastic QFJ (QFJ28-P-S450-1.27): (Product name: MSM82C54-2JS)
• 32-pin Plastic SSOP (SSOP32-P-430-1.00-K): (Product name: MSM82C54-2GS-K)
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FUNCTIONAL BLOCK DIAGRAM
VCC
GND
8 Data
D7 - D0
Bus
Buffer
WR
RD Read/
Write
A0 Logic
A1
CS
8
Control
Word
Register
MSM82C54-2RS/GS/JS
Counter
#0
CLK0
GATE0
OUT0
Counter
#1
CLK1
GATE1
OUT1
Counter
#2
CLK2
GATE2
OUT2
Internal Bus
2/23



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PIN CONFIGURATION (TOP VIEW)
24 pin Plastic DIP
32 pin Plastic SSOP
MSM82C54-2RS/GS/JS
D7 1
D6 2
D5 3
D4 4
D3 5
D2 6
D1 7
D0 8
CLK0 9
OUT0 10
GATE0 11
GND 12
NC
D7
D6
D5
NC
D4
D3
D2
D1
D0
CLK0
NC
OUT0
GATE0
GND
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
24 Vcc
23 WR
22 RD
21 CS
20 A1
19 A0
18 CLK2
17 OUT2
16 GATE2
15 CLK1
14 GATE1
13 OUT1
32 NC
31 Vcc
30 WR
29 RD
28 NC
27 CS
26 A1
25 A0
24 CLK2
23 OUT2
22 GATE2
21 NC
20 CLK1
19 GATE1
18 OUT1
17 NC
28 pin Plastic QFJ
D4 5
D3 6
D2 7
D1 8
D0 9
CLK0 10
NC 11
25 NC
24 CS
23 A1
22 A0
21 CLK2
20 OUT2
19 GATE2
(NC denotes "not connected".)
3/23



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MSM82C54-2RS/GS/JS
ABSOLUTE MAXIMUM RATING
Parameter
Power Supply Voltage
Input Voltage
Output Voltage
Storage Temperature
Power Dissipation
Symbol
Rating
Condition
MSM82C54-2RS MSM82C54-2GS MSM82C54-2JS
VCC
VIN
VOUT
TSTG
With
respect to GND
–0.5 to +7
–0.5 to VCC +0.5
–0.5 to VCC +0.5
–55 to +150
PD Ta = 25°C
0.9
0.7
0.9
Unit
V
V
V
°C
W
RECOMMENDED OPERATING CONDITIONS
Parameter
Power Supply Voltage
Operating Temperature
"L" Input Voltage
"H" Input Voltage
Symbol
VCC
Top
VIL
VIH
Min.
4.5
–40
–0.5
2.2
Typ.
5
+25
Max.
5.5
+85
+0.8
VCC + 0.5
Unit
V
°C
V
V
DC CHARACTERISTICS
Parameter
"L" Output Voltage
Symbol
VOL
"H" Output Voltage
VOH
Input Leak Current
Output Leak Current
Standby Supply
Current
ILI
ILO
ICCS
Conditions
IOL = 2.5 mA
IOH = –2.5 mA
IOH = –100 mA
0 £ VIN £ VCC
0 £ VOUT £ VCC
cs VCC –0.2 V
VIH VCC –0.2 V
VIH £ 0.2 V
VCC = 4.5 V to 5.5 V
Ta = –40°C to +85°C
Operating Supply
Curent
ICC tCLK =100 ns, CL = O pF
Min.
3.0
VCC –0.4
–10
–10
Typ.
Max.
0.4
10
10
10
10
Unit
V
V
V
mA
mA
mA
mA
4/23



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