M27W102-80F6TR Ver la hoja de datos (PDF) - STMicroelectronics

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M27W102-80F6TR

1 Mbit (64Kb x16) Low Voltage UV EPROM and OTP EPROM

STMicroelectronics 

M 27W 102

Table 5. AC Measurement Conditions

Input Rise and Fall Times

Input Pulse Voltages

Input and Output Timing Ref. Voltages

High Speed

≤ 10ns

0 to 3V

1.5V

Standard

≤ 20ns

0.4V to 2.4V

0.8V and 2V

Figure 3. AC Testing Input Output Waveform

High Speed

3V

0V

Standard

2.4V

0.4V

1.5V

2.0V

0.8V

AI01822

Figure 4. 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

AI01823B

Table 6. Capacitance (1) (TA = 25 °C, f = 1 MHz)

Symbol

Parameter

CIN

Input Capacitance

COUT Output Capacitance

Note: Sampled only, not 100% tested.

Test Condit ion

VIN = 0V

VOUT = 0V

Min

Max

Unit

6

pF

12

pF

DEVICE OPERATION

The operating modes of the M27W102 are listed in

the Operating Modes table. A single power supply

is required in the read mode. All inputs are TTL

levels except for VPP and 12V on A9 for Electronic

Signature.

Read Mode

The M27W102 has two control functions, both of

which must be logically active in order to obtain

data at the outputs. Chip Enable (E) is the power

control and should be used for device selection.

Output Enable (G) is the output control and should

be used to gate data to the output pins, indepen-

dent of device selection. Assuming that the ad-

dresses are stable, the address access time

(tAVQV) is equal to the delay from E to output

(tELQV). Data is available at the output after a delay

of tOE from the falling edge of G, assuming that E

has been low and the addresses have been stable

for at least tAVQV-tGLQV.

Standby Mode

The M27W102 has a standby mode which reduc-

es the supply current from 15mA to 15µA with low

voltage operation VCC ≤ 3.6V, see Read Mode DC

Characteristics table for details. The M27W102 is

placed in the standby mode by applying a CMOS

high signal to the E input. When in the standby

mode, the outputs are in a high impedance state,

independent of the G input.

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