MC68HC711E20CFN3 Freescale Semiconductor, MC68HC711E20CFN3 Datasheet - Page 93
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MC68HC711E20CFN3
Manufacturer Part Number
MC68HC711E20CFN3
Description
IC MCU 3MHZ 20K OTP 52-PLCC
Manufacturer
Freescale Semiconductor
Series
HC11r
Specifications of MC68HC711E20CFN3
Core Processor
HC11
Core Size
8-Bit
Speed
3MHz
Connectivity
SCI, SPI
Peripherals
POR, WDT
Number Of I /o
38
Program Memory Size
20KB (20K x 8)
Program Memory Type
OTP
Eeprom Size
512 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
52-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC711E20CFN3
Manufacturer:
FREESCALE
Quantity:
4 463
Company:
Part Number:
MC68HC711E20CFN3
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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4.5.1 Programming an Individual EPROM Address
M68HC11E Family — Rev. 3.2
MOTOROLA
NOTE:
As described in the following subsections, these two methods of
programming and verifying EPROM are possible:
In this method, the MCU programs its own EPROM by controlling the
PPROG register (EPROG in MC68HC711E20). Use these procedures
to program the EPROM through the MCU with:
Any operating mode can be used.
This example applies to all devices with EPROM/OTPROM except for
the MC68HC711E20.
This example applies only to MC68HC711E20.
•
•
•
•
•
EPROG
EPROG
Programming an individual EPROM address
Programming the EPROM with downloaded data
The ROMON bit set in the CONFIG register
The 12-volt nominal programming voltage present on the
XIRQ/V
The IRQ pin must be pulled high.
Operating Modes and On-Chip Memory
LDAB
STAB
STAA
LDAB
STAB
JSR
CLR
LDAB
STAB
STAA
LDAB
STAB
JSR
CLR
PPE
pin
#$20
$103B
$0,X
#$21
$103B
DLYEP
$103B
#$20
$1036
$0,X
#$21
$1036
DLYEP
$1036
Set ELAT bit in (EPGM = 0) to enable
EPROM latches.
Store data to EPROM address
Set EPGM bit with ELAT = 1 to enable
EPROM programming voltage
Delay 2–4 ms
Turn off programming voltage and set
to READ mode
Set ELAT bit (EPGM = 0) to enable
EPROM latches.
Store data to EPROM address
Set EPGM bit with ELAT = 1 to enable
EPROM programming voltage
Delay 2–4 ms
Turn off programming voltage and set
to READ mode
Operating Modes and On-Chip Memory
EPROM/OTPROM
Technical Data
93
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