UPSD3253B-40 查看數據表（PDF） - STMicroelectronics

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UPSD3253B-40

Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM

STMicroelectronics 

µPSD325X DEVICES

Table 129. Program, WRITE and Erase Times (5V Devices)

Symbol

Parameter

Min.

Typ.

Flash Program

8.5

Flash Bulk Erase1 (pre-programmed)

3

Flash Bulk Erase (not pre-programmed)

5

tWHQV3

Sector Erase (pre-programmed)

1

tWHQV2

Sector Erase (not pre-programmed)

2.2

tWHQV1

Byte Program

14

Program / Erase Cycles (per Sector)

100,000

tWHWLO

Sector Erase Time-Out

100

tQ7VQV

DQ7 Valid to Output (DQ7-DQ0) Valid (Data Polling)2

Note: 1. Programmed to all zero before erase.

2. The polling status, DQ7, is valid tQ7VQV time units before the data byte, DQ0-DQ7, is valid for reading.

Max.

30

30

1200

30

Table 130. Program, WRITE and Erase Times (3V Devices)

Symbol

Parameter

Min.

Typ.

Flash Program

8.5

Flash Bulk Erase1 (pre-programmed)

3

Flash Bulk Erase (not pre-programmed)

5

tWHQV3

Sector Erase (pre-programmed)

1

tWHQV2

Sector Erase (not pre-programmed)

2.2

tWHQV1

Byte Program

14

Program / Erase Cycles (per Sector)

100,000

tWHWLO

Sector Erase Time-Out

100

tQ7VQV

DQ7 Valid to Output (DQ7-DQ0) Valid (Data Polling)2

Note: 1. Programmed to all zero before erase.

2. The polling status, DQ7, is valid tQ7VQV time units before the data byte, DQ0-DQ7, is valid for reading.

Max.

30

30

1200

30

Unit

s

s

s

s

s

µs

cycles

µs

ns

Unit

s

s

s

s

s

µs

cycles

µs

ns

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