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參數資料
| 型號： | UPD75P54CS |
| 廠商： | NEC Corp. |
| 英文描述： | 4-Bit, Single-Chip, One-Time Programmable (OTP) CMOS Microcomputers With Serial I/O |
| 中文描述： | 4位，單芯片，一次性可編程（OTP）的CMOS單片機串行I /輸出 |
| 文件頁數： | 6/40頁 |
| 文件大?。?/td> | 320K |
| 代理商： | UPD75P54CS |
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6
μ
PD75P048
1. PIN FUNCTIONS
1.1 PORT PINS (1/2)
Pin Name
P00
P01
P02
P03
P10
P11
P12
P13
P20
P21
P22
P23
P30
Note 2
P31
Note 2
P32
Note 2
P33
Note 2
P40 - P43
Note 2
P50 - P53
Note 2
I/O Circuit
Type
Note 1
-A
F
-B
-C
-C
B
E-B
E-B
M-A
M-A
Input/
Output
Input
I/O
I/O
I/O
Input
I/O
I/O
I/O
I/O
Shared
Pin
INT4
SCK
SO/SB0
SI/SB1
INT0
INT1
INT2
TI0
PTO0
PPO
PCL
BUZ
MD0
MD1
MD2
MD3
–
–
When Reset
Input
Input
Input
Input
High
impedance
High
impedance
8-Bit
I/O
×
×
×
×
Function
4-bit input port (PORT0).
For P01 to P03, pull-up resistors can be
provided by software in units of 3 bits.
With noise elimination function
4-bit input port (PORT1).
Pull-up resistors can be provided by
software in units of 4 bits.
4-bit I/O port (PORT2).
Pull-up resistors can be provided by
software in units of 4 bits.
Programmable 4-bit I/O port (PORT3).
I/O can be specified bit by bit.
Pull-up resistors can be provided by
software in units of 4 bits.
N-ch open-drain 4-bit I/O port (PORT4).
Can withstand 10 V.
Data input/output pins for the PROM
write and verity (Four low-order bits).
N-ch open-drain 4-bit I/O port (PORT5).
Can withstand 10 V.
Data input/output pins for the PROM
write and verify (Four high-order bits).
B
Note 1.
The circle (
2.
Can directly drive LEDs.
) indicates the Schmitt trigger input.
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| UPD75P54G | 4-Bit, Single-Chip, One-Time Programmable (OTP) CMOS Microcomputers With Serial I/O |
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