PSD813F1AV-12MIT datasheet(25/110 Pages) STMICROELECTRONICS

부품명	PSD813F1AV-12MIT

상세설명	Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 3.3V

PDF	110 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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PSD813F1V

Writing the OTP Row

Writing to the OTP row (64 bytes) can only be

done once per byte, and is enabled by an instruc-

tion. This instruction is composed of three specific

WRITE operations of data bytes at three specific

memory locations followed by the data to be

stored in the OTP row (refer to Table 8., page 20).

During the WRITE operations, address bit A6 must

be zero, while address bits A5-A0 define the OTP

Row byte to be written while any EEPROM Sector

Select signal (EESi) is active. Writing the OTP

Row is allowed only when SDP mode is not en-

abled.

Figure 7. EEPROM SDP Enable Flowcharts

WRITE AAh to

Address 555h

WRITE 55h to

Address AAAh

WRITE A0h to

Address 555h

SDP is set

Page Write

Instruction

SDP ENABLE ALGORITHM

WRITE AAh to

Address 555h

WRITE 55h to

Address AAAh

WRITE A0h to

Address 555h

Page Write

Instruction

SDP

Set

SDP

not Set

WRITE

is enabled

WRITE Data to

be Written in

any Address

Write

in Memory

Write Data

SDP Set

after tWC

(Write Cycle Time)

ai09219

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