SH79F166APSLASH044PR datasheet(27/113 Pages) SINOWEALTH

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SH79F166A

7.4.3 SSP Programming Notice

To successfully complete SSP programming, the user’s software must following the steps below:

(1) For Code/Data Programming:

1. Disable interrupt;

2. Fill in the XPAGE, IB_OFFSET for the corresponding address;

3. Fill in IB_DATA if programming is wanted;

4. Fill in IB_CON1-5 sequentially;

5. Add 4 nops for more stable operation;

6. Code/Data programming, CPU will be in IDLE mode;

7. Go to Step 2 if more data are to be programmed;

8. Clear XPAGE; enable interrupt if necessary.

(2) For Sector Erase:

1. Disable interrupt;

2. Fill in the XPAGE for the corresponding sector;

3. Fill in IB_CON1-5 sequentially;

4. Add 4 NOPs for more stable operation;

5. Sector Erase, CPU will be in IDLE mode;

6. Go to step 2 if more sectors are to be erased;

7. Clear XPAGE; enable interrupt if necessary.

(3) For Code Reading:

Just Use “MOVC A, @A+DPTR” or “MOVC A, @A+PC”.

(4) For EEPROM-Like:

Steps is same as code programming,the diffenrences are:

1.Set FAC bit in FLASHCON register before programming or erase EEPROM-Like;

2.One sector of EEPROM-Like is 256 bytes.not 1024 bytes.

Table 7.12 Flash Access Control Register

A7H, Bank0

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

FLASHCON

FAC

R/W

Reset Value

(POR/WDT/LVR/PIN)

Bit Number

Bit Mnemonic

Description

FAC

FAC: Flash access control

0: MOVC or SSP access main memory

1: MOVC or SSP access EEPROM-like

SH79F166AP/044PR Datasheet(PDF) 27 Page - SINOWEALTH Electronic Ltd

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