MC68HC908GR4 MOTOROLA [Motorola, Inc], MC68HC908GR4 Datasheet - Page 164

• Manufacturer Part Number: MC68HC908GR4
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Flash Memory
Technical Data
164
Algorithm for programming
a row (32 bytes) of FLASH memory
NOTE:
The time between each FLASH address change (step 7 to step 7), or
the time between the last FLASH address programmed
to clearing PGM bit (step 7 to step 10)
must not exceed the maximum programming
time, t
This row program algorithm assumes the row/s
to be programmed are initially erased.
PROG
max.
Figure 11-2. FLASH Programming Flowchart
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
1
2
3
4
5
6
7
8
Flash Memory
Read the FLASH block protect register
Write any data to any FLASH address
within the row address range desired
Write data to the FLASH address
to be programmed
Wait for a time, t
Wait for a time, t
Wait for a time, t
programming
Set HVEN bit
Set PGM bit
Completed
this row?
N
PROG
pgs
nvs
10
11
12
13
Y
End of programming
Wait for a time, t
Wait for a time, t
Clear HVEN bit
Clear PGM bit
MC68HC908GR8 — Rev 4.0
nvh
rcv
MOTOROLA