MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 66

• Manufacturer Part Number: MC68HC08AZ60ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

EEPROM-1
5.5.5.1 Program/Erase Using AUTO Bit
5.5.5.2 EEPROM-1 Programming
Advance Information
66
NOTE:
NOTE:
An additional feature available for EEPROM-1 program and erase
operations is the AUTO mode. When enabled, AUTO mode will activate
an internal timer that will automatically terminate the program/erase
cycle and clear the EEPGM bit. Please see
on page 66,
Register
The unprogrammed or erase state of an EEPROM-1 bit is a logic 1.
Programming changes the state to a logic 0. Only EEPROM-1 bytes in
the non-protected blocks and the EE1NVR register can be programmed.
Use the following procedure to program a byte of EEPROM-1:
If using the AUTO mode, also set the AUTO bit during Step 1.
A. EERAS1 and EERAS0 must be cleared for programming. Setting the
EELAT bit configures the address and data buses to latch data for
programming the array. Only data with a valid EEPROM-1 address will
be latched. If EELAT is set, other writes to the EE1CR will be allowed
after a valid EEPROM-1 write.
B. If more than one valid EEPROM-1 write occurs, the last address and
data will be latched overriding the previous address and data. Once data
1. Clear EERAS1 and EERAS0 and set EELAT in the EE1CR.
2. Write the desired data to the desired EEPROM-1 address.
3. Set the EEPGM bit.
4. Wait for time, t
5. Clear EEPGM bit.
6. Wait for time, t
7. Poll the EEPGM bit until it is cleared by the internal timer.
8. Clear EELAT bits.
Step 8.
on page 69 for more information.
EEPROM-1 Erasing
EEPROM-1
EEPGM
EEFPV
(E)
(C)
, for the programming voltage to fall. Go to
, to program the byte.
Go to Step 7 if AUTO is set.
on page 67 and
EEPROM-1 Programming
MC68HC08AZ60A — Rev 0.0
EEPROM-1 Control
MOTOROLA
(D)
(B)
(A)