MC68HC11E1CFN2 Freescale Semiconductor, MC68HC11E1CFN2 Datasheet - Page 53

• Manufacturer Part Number: MC68HC11E1CFN2
• Description: IC MCU 512 EEPROM 2MHZ 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11E1CFN2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Type: ROMless
• Eeprom Size: 512 x 8
• Ram Size: 512 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
• Program Memory Size: -

2.4.1 Programming an Individual EPROM Address
M68HC11E Family — Rev. 5
MOTOROLA
NOTE:
Using the on-chip EPROM/OTPROM programming feature requires an external
12-volt nominal power supply (V
the EPROM/OTPROM programming register (PPROG).
PPROG is the combined EPROM/OTPROM and EEPROM programming register
on all devices with EPROM/OTPROM except the MC68HC711E20. For the
MC68HC711E20, there is a separate register for EPROM/OTPROM programming
called the EPROG register.
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.
1. Programming an individual EPROM address
2. Programming the EPROM with downloaded data
•
•
•
EPROG
EPROG
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.
Freescale Semiconductor, Inc.
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LDAB
STAB
STAA
LDAB
STAB
JSR
CLR
LDAB
STAB
STAA
LDAB
STAB
JSR
CLR
Operating Modes and On-Chip Memory
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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
PPE
). Normal programming is accomplished using
Operating Modes and On-Chip Memory
EPROM/OTPROM
PPE
Data Sheet
pin
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