MC68HC705J1ACDW Freescale Semiconductor, MC68HC705J1ACDW Datasheet - Page 99

IC MCU 4MHZ 1.2K OTP 20-SOIC

MC68HC705J1ACDW

Manufacturer Part Number
MC68HC705J1ACDW
Description
IC MCU 4MHZ 1.2K OTP 20-SOIC
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet

Specifications of MC68HC705J1ACDW

Core Processor
HC05
Core Size
8-Bit
Speed
4MHz
Peripherals
POR, WDT
Number Of I /o
14
Program Memory Size
1.2KB (1.2K x 8)
Program Memory Type
OTP
Ram Size
64 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Connectivity
-

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7.4 Interrupts
7.5 COP Register
MC68HC705J1A — Rev. 4.0
NOTE:
Address:
Clearing the COP bit disables the COP watchdog timer regardless of the
IRQ/V
If the main program executes within the COP timeout period, the clearing
routine should be executed only once. If the main program takes longer
than the COP timeout period, the clearing routine must be executed
more than once.
Place the clearing routine in the main program and not in an interrupt
routine. Clearing the COP watchdog in an interrupt routine might prevent
COP watchdog timeouts even though the main program is not operating
properly.
The COP watchdog does not generate interrupts.
The COP register (COPR) is a write-only register that returns the
contents of EPROM location $07F0 when read.
COPC — COP Clear Bit
Reset:
Read:
Write:
This write-only bit resets the COP watchdog. Reading address $07F0
returns undefined results.
Freescale Semiconductor, Inc.
For More Information On This Product,
Computer Operating Properly (COP) Module
PP
$07F0
Bit 7
pin voltage.
Go to: www.freescale.com
= Unimplemented
Figure 7-1. COP Register (COPR)
6
5
Computer Operating Properly (COP) Module
4
3
2
1
Technical Data
Interrupts
COPC
Bit 0
0

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