MSM51V4221C Datasheet, PDF (3/16 Pages) OKI electronic componets – 262,263-Word × 4-Bit Field Memory

1Semiconductor
PIN CONFIGURATION (TOP VIEW)
FEDS51V4221C-03
MSM51V4221C
WE 1
RSTW 2
16 V_CC
15 RE
SWCK 3
14 RSTR
D_IN0 4
D_IN1 5
D_IN2 6
D_IN3 7
V_{SS 8}
13 SRCK
12 D_OUT0
11 D_OUT1
10 D_OUT2
9 D_OUT3
16-Pin Plastic DIP
WE 1
RSTW 2
SWCK 3
D_IN0 4
NC 5
26 V_CC
SRCK 1
25 RE
24 RSTR
RE 3
23 SRCK WE 5
22 NC _{SWCK 7}
NC 9
D_IN1 ₁₀
D_IN2 11
D_IN3 12
V_SS 13
18 NC
17 D_OUT0
16 D_OUT1
15 D_OUT2
14 D_OUT3
26/20-Pin Plastic SOJ
NC 9
NC 11
D_IN1 13
D_IN3 15
D_OUT3 17
D_OUT1 ¹⁹
2 RSTR
4 V_CC
6 RSTW
8 D_IN0
NO LEAD
12 NC
14 D_IN2
16 V_SS
18 D_OUT2
20 D_OUT0
20-Pin Plastic ZIP
Pin Name
SWCK
SRCK
WE
RE
RSTW
RSTR
D_IN0 to 3
D_OUT0 to 3
V_CC
V_SS
NC
Function
Serial Write Clock
Serial Read Clock
Write Enable
Read Enable
Write Reset Clock
Read Reset Clock
Data Input
Data Output
Power Supply (3.3 V)
Ground (0 V)
No Connection
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