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23C256 データシートの表示(PDF) - NEC => Renesas Technology

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23C256
NEC
NEC => Renesas Technology NEC
23C256 Datasheet PDF : 32 Pages
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µPD23C256112A
48-pin PLASTIC TSOP(I) (12x18) (Reverse bent)
[ µPD23C256112AGY-xxx-MKH ]
NC
48
NC
47
NC
46
NC
45
I/O7
44
I/O6
43
I/O5
42
I/O4
41
NC
40
NC
39
NC
38
VCC
37
VSS
36
NC
35
NC
34
NC
33
I/O3
32
I/O2
31
I/O1
30
I/O0
29
NC
28
NC
27
NC
26
NC
25
Marking Side
1
NC
2
NC
3
NC
4
IC
5
IC
6
GND
7
R, /B
8
/RE
9
/CE
10
NC
11
NC
12
VCC
13
VSS
14
NC
15
NC
16
CLE
17
ALE
18
/WE
19
IC
20
IC
21
IC
22
NC
23
NC
24
NC
I/O0 to I/O7
CLE
ALE
/WE
/RE
/CE
R, /BNote1
VCC
Vss
NC Note2
IC Note3
GND
: Address Inputs / Command Inputs / Data Outputs
: Command Latch Enable Input
: Address Latch Enable Input
: Write Enable Input
: Read Enable Input
: Chip Enable Input
: READY, /BUSY Output
: Supply voltage
: Ground
: No connection
: Internal connection
: GND
Notes 1. This pin is an open-drain output pin. Therefore, a pull-up resistor is required when using this pin.
2. Some signals can be applied because this pin is not connected to the inside of the chip.
3. Leave this pin unconnected or connected to VSS.
Remark Refer to Package Drawings for the 1-pin index mark.
Data Sheet M15902EJ2V0DS
3

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