DSM2190F4 查看數據表（PDF） - STMicroelectronics

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DSM2190F4

DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-2191 DSPs (3.3V Supply)

STMicroelectronics 

DSM2190F4

Table 33. Flash Memory Program, Write and Erase Times

Symbol

Parameter

Min.

Typ.

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

µs

cycles

µs

ns

Table 34. Reset (Reset) Timing

Symbol

Parameter

Conditions

Min

tNLNH

RESET Active Low Time 1

300

tNLNH–PO

Power On Reset Active Low Time

1

tOPR

RESET High to Operational Device

Note: 1. Reset (RESET) does not reset Flash memory Program or Erase cycles.

2. Warm reset aborts Flash memory Program or Erase cycles, and puts the device in Read mode.

Figure 36. Reset (RESET) Timing

Max

Unit

ns

ms

300

ns

VCC

RESET

VCC(min)

tNLNH-PO

Power-On Reset

tOPR

tNLNH

tNLNH-A

Warm Reset

tOPR

AI02866b

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