UPSD3212A Datasheet, PDF(95/163 Page) STMicroelectronics – Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic

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UPSD3212A Datasheet, PDF (95/163 Pages) STMicroelectronics – Flash Programmable System Devices with 8032 MCU with USB and Programmable Logic

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uPSD3212A, uPSD3212C, uPSD3212CV

Table 82. Instructions

Instruction

FS0-FS3 or

CSBOOT0-

CSBOOT1

Cycle 1

Cycle 2 Cycle 3

Cycle 4

Cycle 5 Cycle 6 Cycle 7

READ(5)

1

âReadâ

RD @ RA

READ Sector

Protection(6,8,11)

1

AAh@

X555h

55h@ 90h@ Read status @

XAAAh X555h XX02h

Program a Flash

Byte(11)

1

AAh@

X555h

55h@ A0h@

XAAAh X555h

PD@ PA

Flash Sector

Erase(7,11)

Flash Bulk

Erase(11)

1

AAh@

X555h

55h@ 80h@

XAAAh X555h

AAh@ X555h

55h@ 30h@

XAAAh SA

30h(7)@

next SA

1

AAh@

X555h

55h@ 80h@

XAAAh X555h

AAh@ X555h

55h@ 10h@

XAAAh X555h

Suspend Sector

Erase(9)

1

B0h@

XXXXh

Resume Sector

Erase(10)

1

30h@

XXXXh

RESET(6)

1

F0h@

XXXXh

Note: 1. All bus cycles are WRITE bus cycles, except the ones with the âReadâ label

2. All values are in hexadecimal:

3. X = Donât care. Addresses of the form XXXXh, in this table, must be even addresses

4. RA = Address of the memory location to be read

5. RD = Data READ from location RA during the READ cycle

6. PA = Address of the memory location to be programmed. Addresses are latched on the falling edge of WRITE Strobe (WR, CNTL0).

7. PA is an even address for PSD in Word Programming Mode.

8. PD = Data word to be programmed at location PA. Data is latched on the rising edge of WRITE Strobe (WR, CNTL0)

9. SA = Address of the sector to be erased or verified. The Sector Select (FS0-FS3 or CSBOOT0-CSBOOT1) of the sector to be

erased, or verified, must be Active (High).

10. Sector Select (FS0-FS3 or CSBOOT0-CSBOOT1) signals are active High, and are defined in PSDsoft Express.

11. Only address Bits A11-A0 are used in instruction decoding.

12. No Unlock or instruction cycles are required when the device is in the READ Mode

13. The RESET Instruction is required to return to the READ Mode after reading the Sector Protection Status, or if the Error Flag Bit

(DQ5) goes High.

14. Additional sectors to be erased must be written at the end of the Sector Erase instruction within 80Âµs.

15. The data is 00h for an unprotected sector, and 01h for a protected sector. In the fourth cycle, the Sector Select is active, and

(A1,A0)=(1,0)

16. The system may perform READ and Program cycles in non-erasing sectors, read the Sector Protection Status when in the Suspend

Sector Erase Mode. The Suspend Sector Erase instruction is valid only during a Sector Erase cycle.

17. The Resume Sector Erase instruction is valid only during the Suspend Sector Erase Mode.

18. The MCU cannot invoke these instructions while executing code from the same Flash memory as that for which the instruction is

intended. The MCU must retrieve, for example, the code from the secondary Flash memory when reading the Sector Protection

Status of the primary Flash memory.

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