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MC68HC908LB8_05

On-Chip FLASH Programming Routines

Freescale Semiconductor 

How to Use the Routines

Table 3. Summary of On-Chip FLASH Support Routines (Continued)

GetByte

PutByte

RDVRRNG PRGRNGE ERARNGE

Exit

Conditions

A: Checksum

H:X: Next

FLASH

address

A: Data

received

through PTA0

C-bit: Framing

error

indicator

(error: C = 0)

A, X: No

change

PTA0: Input

and 0 data bit

(DDRA0 = 0,

PTA0 = 0)

C-bit: Verify

result

indicator

(success:

C = 1)

DATA array:

Data

H:X: Next

FLASH

address

replaced with

FLASH read

data (verify

option)

H:X: No

change

I Bit

—

—

—

I bit is set

I bit is set

COP

Not Serviced Not Serviced Serviced

Serviced

Serviced

Subroutines

Called

GetBit

PutByte

—

for send-out

—

option

DELNUS

RAM

Variable

—

—

LADDR

(2 bytes),

DATA array

(no size

limitation as

long as in the

zero page)

CPUSPD,

LADDR

(2 bytes),

DATA array

(maximum 32

bytes)

CTRLBYT,

CPUSPD

Stack Used

(Including

the Routine’s

Call)

6 bytes

4 bytes

9 bytes for

verify

option

11 bytes for

send-out

option

9 bytes

7 bytes

DELNUS

—

—

Not Serviced

—

—

3 bytes

On-Chip FLASH Programming Routines, Rev. 4

6

Freescale Semiconductor

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