PSD4235G2 datasheet(82/89 Pages) STMICROELECTRONICS

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PSD4235G2

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Table 69. Reset (Reset)Timing

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 48. Reset (RESET) Timing

Table 70. VSTBYON Timing

Note: 1. VSTBYON timing is measured at VCC ramp rate of 2 ms.

Table 71. Program, Write and Erase Times

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.

3. DQ7 is DQ15 for Motorola MCU with 16-bit data bus.

Symbol

Parameter

Conditions

Min

Max

Unit

tNLNH

RESET Active Low Time 1

150

tNLNH–PO

Power On Reset Active Low Time

tNLNH–A

Warm Reset 2

µs

tOPR

RESET High to Operational Device

120

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

tBVBH

VSTBY Detection to VSTBYON Output High

(Note 1)

µs

tBXBL

VSTBY Off Detection to VSTBYON Output

Low

(Note 1)

µs

Symbol

Parameter

Min.

Typ.

Max.

Unit

Flash Program

8.5

Flash Bulk Erase1 (pre-programmed)

330

Flash Bulk Erase (not pre-programmed)

tWHQV3

Sector Erase (pre-programmed)

tWHQV2

Sector Erase (not pre-programmed)

2.2

tWHQV1

Byte Program

1200

µs

Program / Erase Cycles (per Sector)

100,000

cycles

tWHWLO

Sector Erase Time-Out

100

µs

tQ7VQV

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

tNLNH-PO

tOPR

AI02866b

RESET

tNLNH

tNLNH-A

tOPR

VCC

CC(min)

Power-On Reset

Warm Reset

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