Symbol

Parameter

Value

Unit

Ambient Operating Temperature

–40 to 85

°C

Storage Temperature

–65 to 150

°C

Lead Temperature, Soldering

(SO8 package)

(PSDIP8 package)

40 sec

10 sec

215

260

°C

Output Voltage

V

Input Voltage

–0.3 to 6.5

V

Supply Voltage

–0.3 to 6.5

V

Electrostatic Discharge Voltage (Human Body model)

(2)

4000

V

Electrostatic Discharge Voltage (Machine model)

(3)

500

V

Notes: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings"

may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other

conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum

Rating conditions for extended periods may affect device reliability. Refer also to the SGS-THOMSON SURE Program and

other relevant quality documents.

2. MIL-STD-883C, 3015.7 (100pF, 1500

Ω)

3. EIAJ IC-121 (Condition C) (200pF, 0

Ω)

SIGNALS DESCRIPTION

Serial Output (Q). The output pin is used to trans-

fer data serially out of the ST95P04. Data is shifted

out on the falling edge of the serial clock.

Serial Input (D). The input pin is used to transfer

data serially into the device. It receives instructions,

addresses, and data to be written. Input is latched

on the rising edge of the serial clock.

Serial Clock (C). The serial clock provides the

timing of the serial interface. Instructions, ad-

dresses, or data present at the input pin are latched

on the rising edge of the clock input, while data on

the Q pin changes after the falling edge of the clock

input.

Chip Select (S). This input is used to select the

ST95P04. The chip is selected by a high to low

transition on the S pin when C is at ’0’ state. At any

time, the chip is deselected by a low to high transi-

tion on the S pin when C is at ’0’ state. As soon as

the chip is deselected, the Q pin is at high imped-

ance state. This pin allows multiple ST95P04 to

share the same SPI bus. After power up, the chip

is at the deselect state. Transitions of S are ignored

when C is at ’1’ state.

D

VSS

C

HOLD

Q

SVCC

W

AI01064B

ST95P04

1

2

3

4

8

7

6

5

Figure 2A. DIP Pin Connections

1

AI01065C

2

3

4

8

7

6

5

D

VSS

C

HOLD

Q

SVCC

W

ST95P04

Figure 2B. SO Pin Connections

2/16

ST95P04