PSD835G2 datasheet(29/102 Pages) STMICROELECTRONICS

部件名	PSD835G2

功能描述	Flash PSD, 5V Supply, for 8-bit MCUs 4 Mbit 256 Kbit Dual Flash Memories and 64 Kbit SRAM

PDF	102 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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29 / 102 page

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PSD835G2

Read the Erase/Program Status Bits

The PSD provides several status bits to be used

by the MCU to confirm the completion of an Erase

or Program cycle of Flash memory. These status

bits minimize the time that the MCU spends per-

forming these tasks and are defined in Table 29.

The status bits can be read as many times as

needed.

For Flash memory, the MCU can perform a READ

operation to obtain these status bits while an

Erase or Program instruction is being executed by

the embedded algorithm. See PROGRAMMING

FLASH MEMORY, page 31 for details.

Table 29. Status Bit

Note: 1. X = Not guaranteed value, can be read either '1' or '0.'

2. DQ7-DQ0 represent the Data Bus Bits, D7-D0.

3. FS0-FS7 and CSBOOT0-CSBOOT3 are active High.

Functional Block

FS0-FS7/CSBOOT0-

CSBOOT3

DQ7

DQ6

DQ5

DQ4

DQ3

DQ2

DQ1

DQ0

Flash Memory

VIH

Data

Polling

Toggle

Flag

Error

Flag

Erase

Time-

out

XXX

PSD835G2 数据表(PDF) 29 Page - STMicroelectronics

PSD835G2 数据表(HTML) 29 Page - STMicroelectronics

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