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D75316

4-bit single-chip microcomputer incorporating LCD controller/driver

NEC => Renesas Technology 

µPD75312(A), 75316(A)

3.1 PORT PINS (2/2)

Pin Name Input/Output Also Served

As

Function

P60

P61

Input/

P62

Output

P63

P70

P71

Input/

P72

Output

P73

BP0

BP1

Output

BP2

BP3

BP4

BP5

Output

BP6

BP7

KR0

Programmable 4-bit input/output port

(PORT6)

KR1

This port can be specified for input/

KR2

output in bit units.

Internal pull-up resistors can be

KR3

specified in 4-bit units by software.

KR4

KR5

4-bit input/output port (PORT7)

Internal pull-up resistors can be

KR6

specified in 4-bit units by software.

KR7

S24

S25

S26

S27

1-bit output port (BIT PORT)

S28

Shared with a segment output pin.

S29

S30

S31

8-Bit I/O When Reset

Input

q

Input

×

*2

Input/

Output

Circuit

TYPE*1

F -A

F -A

G-C

*1: Circles indicate Schmitt trigger inputs.

2: For BP0-7, VLC1 indicated below are selected as the input source. However, the output level is

changed depending on BP0-7 and the VLC1 external circuits.

Example: Since BP0-7 are connected to each other within the µPD75316(A) as shown in the diagram

below, the output level of BP0-7 depends on the sizes of R1, R2 and R3.

V LC1

R1

µ PD75316(A)

ON

ON

V DD

R2

BP0

BP1

R3

10

3

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