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| MIC50398 Datasheet, PDF (1/6 Pages) Micrel Semiconductor – Six Decade Counter / Display Decoder | |||
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MIC50398/50399
Micrel
MIC50398/MIC50399
Six Decade Counter / Display Decoder
Not Recommended for New Designs
General Description
Features
The MIC50398/9 is an ion-implanted, P-channel MOS
six-decade synchronous up/down-counter/display driver
with storage latches. The counter can be loaded
digit-by-digit with BCD data. The counter has an
asynchronous-clear function.
Scanning is controlled by the scan oscillator input which is
self-oscillating or can be driven by an external signal. The
contents of the counter can be transferred into the 6-digit
latch which is then multiplexed from MSD to LSD in BCD or
7-segment format to the output. These devices are intended
to interface directly with the standard CMOS logic families.
⢠Single power supply
⢠Schmitt-Trigger on the count-input
⢠Six decades of synchronous up/down counting
⢠Look-ahead carry or borrow
⢠Loadable counter
⢠Multiplexed seven-segment outputs MIC50398N
⢠Multiplexed BCD outputs, MIC50399N
⢠Internal scan oscillator
Pin Connection
V SS 1
SET 2
a3
b4
c5
SEGMENTS d 6
e7
f8
g9
STORE 10
COUNTER
BCD
INPUTS
C D 11
C C 12
C B 13
C A 14
MIC50398CN
28 UP/DOWN
27 CARRY
26 COUNT INHIBIT
25 COUNT INPUT
24 LOAD COUNTER
23 D 6
22 D 5
21 D 4
20 D 3
DIGIT
STROBES
19 D 2
18 D 1
17 V DD
16 SCAN
15 CLEAR
V SS 1
SET 2
NC 3
NC 4
A5
BCD
OUTPUT
B6
C7
D8
STORE 9
C D 10
COUNTER
BCD
INPUTS
C C 11
C B 12
C A 13
CLEAR 14
MIC50399CN
28 UP/DOWN
27 ZERO
26 CARRY
25 COUNT INHIBIT
24 COUNT INPUT
23 LOAD COUNTER
22 D 6
21 D 5
20 D 4
19 D 3
DIGIT
STROBES
18 D 2
17 D 1
16 V DD
15 SCAN
Ordering Information
Part Number Temp. Range
MIC50398CN
0°C to 70°C
MIC50399CN
0°C to 70°C
Package
28-pin Plastic DIP
28-pin Plastic DIP
8-10
Segment Identification
a
f gb
e
c
d
August 1998
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