MC68HC705C8ACFN Freescale Semiconductor, MC68HC705C8ACFN Datasheet - Page 113

IC MCU 4MHZ 8K OTP 44-PLCC

MC68HC705C8ACFN

Manufacturer Part Number
MC68HC705C8ACFN
Description
IC MCU 4MHZ 8K OTP 44-PLCC
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet

Specifications of MC68HC705C8ACFN

Core Processor
HC05
Core Size
8-Bit
Speed
2.1MHz
Connectivity
SCI, SPI
Peripherals
POR, WDT
Number Of I /o
24
Program Memory Size
8KB (8K x 8)
Program Memory Type
OTP
Ram Size
304 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-

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9.4.4 Secure PROM and Verify
9.4.5 Secure PROM and Dump
MC68HC705C8A — Rev. 3
MOTOROLA
This routine is used after the PROM is programmed successfully to
verify the contents of the MCU PROM against the contents of the
EPROM and then to secure the PROM. To accomplish this routine, take
these steps:
No LED is illuminated during this routine. Further, the end of the routine
does not mean that the SEC bit was verified. To ensure that security is
properly enabled, attempt to perform another verify routine. If the green
LED does not light, the PROM has been secured properly.
This routine is used after the PROM is successfully programmed to
dump the contents of the MCU PROM through the SCI (binary upload)
and then to secure the PROM. To accomplish this routine, take these
steps:
1. Set switch 1 in the ON position (restores V
2. Restore V
3. Set switches S4 and S6 in the OFF position.
4. Set switches S3 and S5 in the ON position.
5. Set switch 2 in the OUT position (routine is activated).
6. Set switch 2 in the RESET position when the routine is completed.
1. Set switch 1 in the ON position (restores V
2. Restore V
3. Set switch S6 in the OFF position.
4. Set switches S3, S4, and S5 in the ON position.
5. Set switch 2 in the OUT position (routine is activated).
6. Set switch 2 in the RESET position when the routine is completed.
Freescale Semiconductor, Inc.
For More Information On This Product,
Execution time for this routine is about one second.
Execution time for this routine is about one second.
EPROM/OTPROM (PROM)
Go to: www.freescale.com
PP
PP
power to the programming board.
power to the programming board.
PROM Programming Routines
EPROM/OTPROM (PROM)
DD
DD
).
).
Technical Data
113

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