Z86L79 Datasheet, PDF (47/58 Pages) Zilog, Inc. – Low-Voltage Microcontroller

Zilog
Z86L79/80
Low-Voltage Microcontroller
4 Clock
Filter
Clear
CLK
18 Clock RESET
Generator
RESET
1
WDT Select
(WDTMR)
CK Source
Select
(WDTMR)
XTAL
WDT TAP SELECT
RC
OSC.
5 ms POR _{5 ms} 15 ms 25 ms 100 ms
M
CK
U
WDT/POR Counter Chain
X
CLR
VDD
2V REF.
2V Operating
+ ^{Voltage Det.}
-
From Stop
Mode
Recovery
Source
12 ns Glitch Filter
WDT
Stop Delay
Select (SMR)
Figure 38. Resets and WDT
Internal
RESET
PRELIMINARY
3-47