z86e72 ZiLOG Semiconductor, z86e72 Datasheet - Page 78

• Manufacturer Part Number: z86e72
• Description: Otp Microcontroller
• Manufacturer: ZiLOG Semiconductor

PS008704-0507
/RESET
Low-Voltage Protection
* /CLR1 and /CLR2 enable the WDT/POR and
18 Clock Reset timers upon a Low to High input translation.
Select (SMR)
From Stop
CK Source
Stop Delay
Recovery
(WDTMR)
VBO/VLV
2V REF .
Source
Mode
Select
XTAL
WDT
VDD
Note:
An on-board Voltage Comparator checks that V
ensure correct operation of the device. Reset is globally driven if V
(Low Voltage). The minimum operating voltage varies with the temperature and
operating frequency, while V
12 ns Glitch Filter
The LVD flag will be valid after enabling the detection for 20 μS (design
estimation, not tested in production). LVD does not work at STOP mode. It
must be disabled during STOP mode in order to reduce current.
+
-
5 Clock
Filter
INTERNAL
Low Operating
Voltage Det.
OSC.
RC
Figure 44. Resets and WDT
M
U
X
LV
* /CLR 2
CLK
CLK
POR
varies with temperature only.
*CLR1
18 Clock RESET
WDT/POR Counter Chain
WDT1
VCC
Generator
WDT TAP SELECT
2
CC
3
is at the required level to
RESET
4
OTP Microcontroller
CC
is below V
Internal
RESET
Active
High
LV
74