SAB80C537-N Infineon Technologies, SAB80C537-N Datasheet - Page 43

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SAB80C537-N

Manufacturer Part Number
SAB80C537-N
Description
IC MIRCROCONTROLLER 8BIT 84PLCC
Manufacturer
Infineon Technologies
Datasheet

Specifications of SAB80C537-N

Core Processor
8051
Core Size
8-Bit
Speed
12MHz
Connectivity
EBI/EMI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
56
Program Memory Type
ROMless
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 12x8b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
84-LCC (J-Lead)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
Q1612975

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SAB 80C517/80C537
Figure 11
Block Diagram of the Programmable Watchdog Timer
Oscillator Watchdog
The oscillator watchdog monitors the on-chip quartz oscillator. A detected oscillator failure
(f
< appr. 300 kHz) causes a hardware reset. The reset state is held until the on-chip
OSC
oscillator is working again. The oscillator watchdog feature is enabled by a high level at pin
OWE (pin 69). An oscillator watchdog reset sets status flag OWDS which can be examined and
modified by software. Figure 12 shows a block diagram of the oscillator watchdog.
Figure 12
Functional Block Diagram of the Oscillator Watchdog
Semiconductor Group
42

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