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NJU3551D

4-BIT SINGLE CHIP OTP MICRO CONTROLLER

Japan Radio Corporation  

NJU3551

s OPTION as same as mask version (NJU3501)

1) INPUT OUTPUT Terminal Selection

All of input-output terminals select a terminal type for each port from the following table by the mask

option.

[ CIRCUIT TYPE TABLE ]

SYMBOL

Input / Output

Terminal*1

TERMINAL TYPES

EXTRA FUNCTION

REMARKS

PA0

ICP OC

IC

PA1

ICP OC

IC

PA2

ICP OC

IC

PA3

ICP OC

IC

PB0

IOP

IO

PB1

IOP

IO

PB2

IOP

IO

PB3

IOP

IO

SDO / PC0

ICP OC

IC

SO Serial data output

MSB MSB first

LSB LSB first

SDI(O) / PC1 ICP OC

*2 IC

SDP Serial data input/output

SD

SCK / PC2 ICP OC

*2 IC

SCP Serial clock input/output

SC

PD0

ISP OC

Restart signal input

IS

PD1

ISP OC

IS

Edge detection

R Rise edge detection

F Fall edge detection

EXTI / PE0 ISP

*2 IS

IIP External interrupt input

II (EXTI)

Note) The symbol in the above table is the same as in mask option generator software.

*1) The symbol and the detail circuits of INPUT OUTPUT TERMINAL are written in INPUT OUTPUT

TERMINAL TYPE.

*2) The pull-up resistance is added to the terminal selected as the extra function.

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