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MSM82C53-2JS
Datasheet
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OKI MSM82C53-2JS, MSM82C53-2RS, MSM82C53-2GS-K Datasheet

E2O0018-27-X2
¡ Semiconductor MSM82C53-2RS/GS/JS
¡ Semiconductor
This version: Jan. 1998
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)
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¡ Semiconductor MSM82C53-2RS/GS/JS
FUNCTIONAL BLOCK DIAGRAM
V
CC
GND
8
D
- D
7
0
Data
Bus
Buffer
Counter
#0
CLK
GATE
OUT
0
0
0
8
WR
RD
A A
Read/
Write
0
1
Logic
Counter
#1
CLK
GATE
OUT
1
1
1
CS
Control
Word
Register
Counter
#2
CLK
GATE
OUT
2
2
2
Internal Bus
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¡ Semiconductor MSM82C53-2RS/GS/JS
PIN CONFIGURATION (TOP VIEW)
24 pin Plastic DIP
32 pin Plastic SSOP
GATE
CLK
OUT
GATE
GND
CLK
OUT
GND
NC
D
7
D
6
D
5
NC
D
4
D
3
D
2
D
1
D
0
0
NC
0
0
NC
D
1
7
D
2
6
D
3
5
D
4
4
D
5
3
D
6
2
D
7
1
D
8
0
9
0
10
0
11
0
12
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
24
23
22
21
20
19
18
17
16
15
14
13
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
V
cc
WR
RD
CS
A
1
A
0
CLK
OUT
GATE
CLK
GATE
OUT
NC V
cc
WR RD
NC
CS
A
1
A
0
CLK OUT
GATE NC CLK GATE OUT NC
2
2
2
1
1
1
2
2
2
1
1
1
(NC denotes "not connected")
28 pin Plastic QFJ
CLK
D
D
D
D
D
NC
5D6D7
D 4
3
2
5
4
6
3
7
2
8
1
9
0
10
0
11
12
13
14
GATE0
GND
OUT0
NC 1
15
NC
CC
V
28
16
1
OUT
WR
27
17
1
GATE
RD
26
18
1
CLK
25
24
23
22
21
20
19
NC
CS
A
1
A
0
CLK
OUT
GATE
2
2
2
3/19
¡ Semiconductor MSM82C53-2RS/GS/JS
ABSOLUTE MAXIMUM RATINGS
Parameter Units
Supply Voltage
Input Voltage
Output Voltage
Storage Temperature
Power Dissipation
Symbol
V
CC
V
IN
V
OUT
T
STG
P
D
Condition
Respect
to GND
—
Ta = 25°C
MSM82C53-2RS
MSM82C53-2GS MSM82C53-2JS
–0.5 to + 7
–0.5 to V
–0.5 to V
CC
CC
+ 0.5
+ 0.5
–55 to + 150
0.7
0.90.9
OPERATING RANGES
Rating
Parameter UnitSymbol
Supply Voltage
Operating Temperature
Condition
V
CC
T
op
VIL = 0.2 V, VIH = VCC -0.2 V, Operating Frequency 2.6 MHz
Range
3 to 6
–40 to +85
RECOMMENDED OPERATING CONDITIONS
V
V
V
°C
W
V
°C
Parameter UnitSymbol
Supply Voltage
Operating Temperature
"L" Input Voltage V
"H" Input Voltage
Min.
V
CC
T
op
IL
V
IH
4.5
–40
–0.3
2.2
Typ.
5V
+25
—
—
Max.
+0.8
V
CC
5.5
+85
+ 0.3
DC CHARACTERISTICS
Parameter Unit
"L" Output Voltage
"H" Output Voltage
Input Leak Current
Output Leak Current
Standby Supply Current
Operating Supply Current
Symbol
V
OL
V
OH
I
LI
I
LO
I
CCS
I
CC
I
= 4 mA
OL
I
= –1 mA
OH
0 £ V
0 £ V CS ≥ V
≥ V
V
IH
V
£ 0.2 V
IL
t
= 125 ns
CLK
C
= 0 pF
L
IN
OUT
CC
CC
£ V
£ V
- 0.2 V
- 0.2 V
Condition
CC
CC
= 4.5 V to 5.5 V
V
CC
Ta
= –40°C to +85°C
Min.
—
3.7
–10
–10
—
—
Typ. Max.
— 0.45 V
—— V
—10mA
—10mA
— 100 mA
—8mA
°C
V
V
4/19
¡ Semiconductor MSM82C53-2RS/GS/JS
AC CHARACTERISTICS
(V
= 4.5 V to 5.5 V, Ta = –40 to +85°C)
CC
Parameter
Address Set-up Time before Reading Address Hold Time after Reading
Read Pulse Width Read Recovery Time Address Set-up Time before Writing Address Hold Time after Writing Write Pulse Width Data Input Set-up Time before Writing Data Input Hold Time after Writing Write Recovery Time Clock Cycle Time Clock "H" Pulse Width Clock "L" Pusle Width "H" Gate Pulse Width "L" Gate PUlse Width Gate Input Set-up Time before Clock Gate Input Hold Time after Clock Output Delay Time after Reading Output Floating Delay Time after
Reading Output Delay Time after Gate Output Delay Time after Clock Output Delay Time after Address
Symbol Unit Condition
t
AR
t
RA
t
RR
t
RVR
t
AW
t
WA
t
WW
t
DW
t
WD
t
RVW
t
CLK
t
PWH
t
PWL
t
GW
t
GL
t
GS
t
GH
t
RD
t
DF
t
ODG
t
OD
t
AD
MSM82C53-2
Min.
30
0 150 200
0
20 150 100
20 200 125
60
60
50
50
50
50
—
5
—
—
—
Max.
— —
— — — — — — — —
D.C.
— — — — — —
120
90
120 150 180
ns ns Read
ns
Cycle
ns ns ns ns Write ns
Cycle
ns ns ns ns ns ns ns ns
Clock
and
Gate
Timing
ns ns
ns
ns ns
Delay
Time
ns
= 150 pF
C
L
Note: Timing measured at VL = 0.8 V and VH = 2.2 V for both inputs and outputs.
5/19
¡ Semiconductor MSM82C53-2RS/GS/JS
TIMING CHART
WriteTiming
A
CS
0 - 1
Read Timing
A
0 - 7,
RD
D
CS
0 - 7
WR
t
AW
t
DW
t
WW
t
AR
t
RR
t
WD
t
RA
t
WA
D
0 - 7
Clock & Gate Timing
CLK
GATE
t
PWH
CLK
Valid
t
t
GW
DF
High ImpedanceHigh Impedance
t
GS
t
GH
t
OD
t
t
AD
RD
t
t
PWL
t
GH
t
GS
t
GL
t
ODG
OUT
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