M38262E6FS datasheet(15/91 Pages) RENESAS

15 / 91 page

Rev.1.00

Sep 06, 2006

page 15 of 88

REJ03B0181-0100

3826 Group (One Time PROM version)

Fig. 13 Structure of PULL register A and PULL register B

Pull-up Control

By setting the PULL register A (address 001616) or the PULL reg-

ister B (address 001716), ports P0 to P2, P4 to P6 can control

pull-up with a program.

However, the contents of PULL register A and PULL register B do

not affect ports set to output mode and the ports are no pulled up.

The PULL register A setting is invalid for pins selecting segment

output with the segment output enable register and the pins are

not pulled up.

P00, P01 pull-up control bit

P02, P03 pull-up control bit

P04–P07 pull-up control bit

P10–P13 pull-up control bit

P14, P15 pull-up control bit

P16, P17 pull-up control bit

P20–P23 pull-up control bit

P24–P27 pull-up control bit

PULL register A

(PULLA : address 001616)

P41–P43 pull-up control bit

P44–P47 pull-up control bit

P50–P53 pull-up control bit

P54–P57 pull-up control bit

P60–P63 pull-up control bit

P64–P67 pull-up control bit

Not used “0” at reading)

0 : Disable

1 : Enable

PULL register B

(PULLB : address 001716)

Note: The contents of PULL register A and PULL register B

do not affect ports set to output mode.

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