Datasheet

Section 10 I/O Ports
R01UH0309EJ0500 Rev. 5.00 Page 629 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
10.10.7 Port B Input Pull-Up MOS States
Port B has a built-in input pull-up MOS function that can be controlled by software. This input
pull-up MOS function can be used in modes 3, 4, and 7. The input pull-up MOS can be specified
as on or off on a bit-by-bit basis.
In modes 3, 4, and 7, when a PBDDR bit is cleared to 0, setting the corresponding PBPCR bit to 1
turns on the input pull-up MOS for that pin.
Table 10.4 summarizes the input pull-up MOS states.
Table 10.4 Input Pull-Up MOS States for Port B
Mode Reset
Hardware
Standby Mode
Software
Standby Mode
In Other
Operations
1 or 2 Off Off Off Off
3, 4 or 7 On/Off On/Off
[Legend]
Off: Input pull-up MOS is always off.
On/Off: Input pull-up MOS is on when in a input port state 0 and PBPCR = 1; otherwise off.