mc68hc908gp20 Freescale Semiconductor, Inc, mc68hc908gp20 Datasheet - Page 179

• Manufacturer Part Number: mc68hc908gp20
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908GP20
Freescale Semiconductor
Smart Programming Algorithm
Page Program/Margin Read Procedure
Note: This algorithm is mandatory for programming the FLASH.
Note: This page program algorithm assumes the page/s
to be programmed are initially erased.
—
Rev 2.1
Figure 11-2. Smart Programming Algorithm
N
INCREMENT ATTEMPT COUNTER
PROGRAMMING OPERATION
ATTEMPT COUNT
Y
FLSPULSES?
EQUAL TO
FAILED
N
WRITE DATA TO SELECTED PAGE
MARGIN READ PAGE OF DATA
PROGRAMMING OPERATION
SET PGM BIT AND FDIV BITS
PROTECT REGISTER
INITIALIZE ATTEMPT
READ FLASH BLOCK
CLEAR MARGIN BIT
MARGIN READ DATA
PROGRAM FLASH
COUNTER TO 0
CLEAR HVEN BIT
SET MARGIN BIT
Y
CLEAR PGM BIT
SET HVEN BIT
WRITE DATA?
COMPLETE
WAIT t
WAIT t
WAIT t
WAIT t
EQUAL TO
Advance Information
PROG
HVTV
HVD
VTP
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