M29F002 データシートの表示（PDF） - STMicroelectronics

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M29F002

2 Mbit (256Kb x8, Boot Block) Single Supply Flash Memory

STMicroelectronics 

Table 11. AC Measurement Conditions

Input Rise and Fall Times

Input Pulse Voltages

Input and Output Timing Ref. Voltages

M29F002T, M29F002NT, M29F002B

High Speed

≤ 10ns

0 to 3V

1.5V

Standard

≤ 10ns

0.45V to 2.4V

0.8V and 2V

Figure 4. AC Testing Input Output Waveform

High Speed

3V

0V

Standard

2.4V

0.45V

1.5V

2.0V

0.8V

AI01275B

Figure 5. AC Testing Load Circuit

1.3V

1N914

DEVICE

UNDER

TEST

3.3kΩ

CL

OUT

CL = 30pF for High Speed

CL = 100pF for Standard

CL includes JIG capacitance

AI01276B

Table 12. Capacitance(1) (TA = 25 °C, f = 1 MHz )

Symbol

Parameter

Test Condition

CIN

Input Capacitance

VIN = 0V

C OUT

Output Capacitance

Note: 1. Sampled only, not 100% tested.

VOUT = 0V

Min

Max

Unit

6

pF

12

pF

Auto Select (AS) Instruction. This instruction

uses the two Coded cycles followed by one write

cycle giving the command 90h to address 555h for

command set-up. Asubsequentread will output the

manufacturer code and the device code or the

block protection status depending on the levels of

A0 and A1. The manufacturer code, 20h, is output

when the addresses lines A0 and A1 are Low, the

device code is output when A0 is High with A1 Low.

The AS instruction also allows access to the block

protectionstatus. After givingthe AS instruction, A0

is set to VIL with A1 at VIH, while A13-A17 define

the address of the block to be verified. A read in

these conditions will output a 01h if the block is

protected and a 00h if the block is not protected.

Program (PG) Instruction. This instruction uses

four write cycles. The Program command A0h is

written to address 555h on the third cycle after two

Coded cycles. A fourth write operation latches the

Address on the falling edge of W or E and the Data

to be written on the rising edge and starts the

P/E.C. Read operations output the Status Register

bits after the programming has started. Memory

programming is made only by writing ’0’ in place of

’1’. Status bits DQ6 and DQ7 determine if program-

ming is on-goingand DQ5 allows verification of any

possible error. Programming at an address not in

blocks being erased is also possible during erase

suspend. In this case, DQ2 will toggle at the ad-

dress being programmed.

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