ST62T18CB6 STMicroelectronics, ST62T18CB6 Datasheet - Page 27

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ST62T18CB6

Manufacturer Part Number
ST62T18CB6
Description
8-bit Microcontrollers - MCU OTP EPROM 8K SPI/UAR
Manufacturer
STMicroelectronics
Datasheet

Specifications of ST62T18CB6

Core
ST6
Data Bus Width
8 bit
Maximum Clock Frequency
8 MHz
Program Memory Size
7948 B
Data Ram Size
192 B
On-chip Adc
Yes
Operating Supply Voltage
3 V to 6 V
Package / Case
PDIP-20
Mounting Style
Through Hole
A/d Bit Size
8 bit
A/d Channels Available
7
Data Rom Size
64 B
Interface Type
UART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
12
Number Of Timers
1
Program Memory Type
EPROM
Factory Pack Quantity
20
Supply Voltage - Max
6 V
Supply Voltage - Min
3.6 V

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0
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
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.
Figure 19. Digital Watchdog Block Diagram
S
RSFF
RESET
Q
R
DB0
DB1.7
8
WRITE
DATA BUS
-2
LOAD
7
RESET
SET
Figure 18. A typical circuit making use of the
EXERNAL STOP MODE CONTROL feature
SWITCH
SET
-2
8
OSCILLATOR
CLOCK
-12
VA00010
ST62T18C/E18C
NMI
I/O
VR02002
27/82
27

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