Datasheet

Section 8 I/O Ports
Rev. 2.00 Aug. 20, 2008 Page 298 of 1198
REJ09B0403-0200
(8) Port 4 Input Pull-Up MOS
Port 4 has built-in input pull-up MOSs that can be controlled by software. The input pull-up MOS
can be used in single-chip mode and address-data multiplex extended mode. Table 8.13
summarizes the input pull-up MOS states.
Table 8.13 Port 4 Input Pull-Up MOS States
Mode Reset
Hardware
Standby Mode
Software Standby
Mode
In Other
Operations
Normal extended mode
(EXPE = 1, ADMXE = 0)
Off Off Off Off
Single-chip mode (EXPE = 0)
Address-data multiplex
extended mode (EXPE = 1,
ADMXE = 1)
Off Off On/Off On/Off
[Legend]
Off: Always off.
On/Off: On when input state and P4PCR = 1; otherwise off.