Product data

HD404818 Series

Table 20 Input/Output by Program Control

PMRB Bit 3 0 1

DCR0101

PDR 01010101

PMOS (A) — — — On — — — On

NMOS (B) — — On — — — On —

Pull-up MOS — — — — — On — On

Notes: — indicates off status.

1. Combine the values of the above mode registers (PMRB3, DCR, and PDR) to select the

input/output for PMOS (A), NMOS (B), and the pull-up MOS, individually.

The DCR and PDR control each pin. Also, PMRB3 controls the on/off of all pull-up MOSs.

2. The second bit of the miscellaneous register (MIS2) controls R0

/SO. When MIS2 is 1, PMOS

(A) is off.

MIS2

/SO

PMOS (A)

0On

1 Off

3. Each bit of DCR corresponds to each port as follows:

DCR Bit 3 Bit 2 Bit 1 Bit 0

DCR0 R0

DCR1 R1

DCR2 R2

DCR3 R3

DCRB D

DCRC D

DCRD — — D