ST62T45B STMicroelectronics, ST62T45B Datasheet - Page 26
![no-image](/images/manufacturer_photos/0/6/637/stmicroelectronics_sml.jpg)
ST62T45B
Manufacturer Part Number
ST62T45B
Description
8-BIT OTP/EPROM MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST62T45B.pdf
(72 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
www.DataSheet4U.com
25
ST62T45B/E45B
DIGITAL WATCHDOG (Cont’d)
These instructions test the C bit and Reset the
MCU (i.e. disable the Watchdog) if the bit is set
(i.e. if the Watchdog is active), thus disabling the
Watchdog.
In all modes, a minimum of 28 instructions are ex-
ecuted after activation, before the Watchdog can
generate a Reset. Consequently, user software
should load the watchdog counter within the first
Figure 15. Digital Watchdog Block Diagram
26/72
S
RSFF
RESET
Q
R
DB0
DB1.7
8
WRITE
DATA BUS
-2
LOAD
7
RESET
SET
27 instructions following Watchdog activation
(software mode), or within the first 27 instructions
executed following a Reset (hardware activation).
It should be noted that when the GEN bit is low (in-
terrupts disabled), the NMI interrupt is active but
cannot cause a wake up from STOP/WAIT
modes.
SET
-2
8
OSCILLATOR
CLOCK
-12
VA00010