M34S32 datasheet(6/18 Pages) STMICROELECTRONICS

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M34S32

Table 7. AC Measurement Conditions

Input Rise and

Fall Times

≤ 50ns

Input Pulse

Voltages

0.2 VCC to 0.8 VCC

Input and Output

Timing Reference

Voltages

0.3 VCC to 0.7 VCC

Table 8. AC Characteristics (TA = 0 to 70°C,

–40 to 85°C; VCC = 4.5V to 5.5V, 2.5V to 5.5V)

Symbol

Alt.

Parameter

M34S32

Unit

VCC = 4.5V to

5.5V

VCC = 2.5V to

5.5V

Min.

Max.

Min.

Max.

tCH1CH2

Clock Rise Time

300

tCL1CL2

Clock Fall Time

300

tDH1DH2

(1)

SDA Rise Time

300

tDL1DL2

(1)

SDA Fall Time

300

tCHDX

(2)

tSU:STA Clock High to Input Transition

600

tCHCL

tHIGH

Clock Pulse Width High

600

tDLCL

tHD:STA Input Low to Clock Low (START)

600

tCLDX

tHD:DAT Clock Low to Input Transition

µs

tCLCH

tLOW

Clock Pulse Width Low

1300

tDXCX

tSU:DAT Input Transition to Clock Transition

100

tCHDH

tSU:STO Clock High to Input High (STOP)

600

tDHDL

tBUF

Input High to Input Low (Bus Free)

1300

tCLQV

(3)

tAA

Clock Low to Next Data Out Valid

200

900

200

900

tQLQx

tDH

Data Out Hold Time

200

fSCL

Clock Frequency

400

kHz

tWR

Write Time

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

2. For a reSTART condition, or following a write cycle.

3. The minimum value delays the falling/rising edge of SDA away from SCL=1 in order to avoid unwanted START and/or STOP

conditions.

Figure 6. AC Testing Input/Output Waveforms

AI00825

0.8VCC

0.2VCC

0.7VCC

0.3VCC

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