PM0020 datasheet(48/87 Pages) STMICROELECTRONICS

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JTAG sequence

PM00020

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5.8

ISC-CLR-STATUS

5.9

ISC-PROGRAM

Table 19.

ISC-CLR-STATUS sequence

Step

Tap Activity

Comment

Run-Test/Idle

Start

IR-Scan

Load 5-bit BYPASS + ISC_CLR_STATUS

DR-Scan

Shift out 1-bit BYPASS + status (should still show

error)

Run-Test/Idle

Clear status (including module’s error), wait 50uS

DR-Scan

Shift out 1-bit BYPASS + status – expect no error

Run-Test/Idle

End

Table 20.

ISC-PROGRAM sequence

Step

Tap Activity

Comment

Run-Test/Idle

Start

IR-Scan

Load 5-bit BYPASS + ISC_ADDRESS_SHIFT

DR-Scan

Shift in 1-bit BYPASS + 8 bits sector address

IR-Scan

Load 5-bit BYPASS + ISC_PROGRAM

4DR-Scan

Shift in 1-bit BYPASS + 64 bits of data to be

programmed

Run-Test/Idle

Program starts, address incremented

Wait for 50us. Begin polling

IR-Scan

Load 5-bit BYPASS + ISC-NOOP

DR-Scan

Shift out 1-bit BYPASS + status

Repeat step 7 until ready = 1

Go back to step 3, repeat steps 3-7 until end of sector is reached.

Run-Test/Idle

End

PM0020 Datasheet(PDF) 48 Page - STMicroelectronics

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