Z51F3220FNX Datasheet, PDF (109/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
11.3.3 Block Diagram
WDT Clock
WDTEN
WDTCNT
clear
To RESET
Circuit
WDTDR
WDTCL
WDTRSON
WDTCR
Figure 11.4 Watch Dog Timer Block Diagram
WDTIFR
clear
INT_ACK
To interrupt
block
11.3.4 Register Map
Table 11-3 Watch Dog Timer Register Map
Name
Address
Dir
WDTCNT
8EH
R
WDTDR
8EH
W
WDTCR
8DH
R/W
Default
00H
FFH
00H
Description
Watch Dog Timer Counter Register
Watch Dog Timer Data Register
Watch Dog Timer Control Register
11.3.5 Watch Dog Timer Register Description
The watch dog timer register consists of watch dog timer counter register (WDTCNT), watch dog timer data
register (WDTDR) and watch dog timer control register (WDTCR).
PS029902-0212
PRELIMINARY
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