Renesas H8/38024 Series, Hardware Manual

Page: 328 / 661

Rev. 6.00, 08/04, page 298 of 628
Port Mode Register 2 (PMR2)
Bit 7 6 5 4 3 2 1 0
— — POF1 — — WDCKS NCS IRQ0
Initial value 1 1 0 1 1 0 0 0
Read/Write — — R/W — — R/W R/W R/W
PMR2 is an 8-bit read/write register, mainly controlling the selection of pin functions for port 2.
Only the bit relating to the watchdog timer is described here. For details of the other bits, see
section 8, I/O Ports.
Bit 2—Watchdog Timer Source Clock Select (WDCKS)
This bit selects the watchdog timer source clock. Note that stabilization times for the H8/38024,
H8/38024S, and H8/38024F-ZTAT Group and for the H8/38124 Group are different.
•
H8/38024, H8/38024S, H8/38024F-ZTAT Group
WDCKS Description
0
φ
/8192 selected (initial value)
1
φ
w/32 selected
•
H8/38124 Group
WDCKS Description
0 Selects clock based on timer mode register W (TMW) setting (initial value)
1
φ
w/32 selected