ADM1021AARQZ-R View Datasheet(PDF) - ON Semiconductor

Part Name

Description

Manufacturer

ADM1021AARQZ-R

Low Cost Microprocessor System Temperature Monitor Microcomputer

ON Semiconductor 

ADM1021A

ELECTRICAL CHARACTERISTICS (TA = TMIN to TMAX, VDD = 3.0 V to 3.6 V, unless otherwise noted. (Note 1)

Parameter

Test Conditions / Comments

Min

Typ

Max

Unit

SMBus Interface (See Figure 2)

Logic Input High Voltage, VIH

STBY, SCLK, SDATA

VDD = 3.0 V to 5.5 V

2.2

V

Logic Input Low Voltage, VIL

STBY, SCLK, SDATA

VDD = 3.0 V to 5.5 V

0.8

V

SMBus Output Low Sink Current

SDATA forced to 0.6 V

6.0

mA

ALERT Output Low Sink Current

ALERT forced to 0.4 V

1.0

mA

Logic Input Current, IIH, IIL

SMBus Input Capacitance, SCLK, SDATA

−1.0

+1.0

mA

5.0

pF

SMBus Clock Frequency

100

kHz

SMBus Clock Low Time, tLOW

tLOW between 10% points

4.7

ms

SMBus Clock High Time, tHIGH

tHIGH between 90% points

4.0

ms

SMBus Start Condition Setup Time,

tSU:STA

4.7

ms

SMBus Repeat Start Condition

250

ns

Setup Time, tSU:STA

Between 90% and 90% points

250

ns

SMBus Start Condition Hold Time, tHD:STA Time from 10% of SDATA to 90% of SCLK

4.0

ms

SMBus Stop Condition Setup Time, tSU:STO Time from 90% of SCLK to 10% of SDATA

4.0

ms

SMBus Data Valid to SCLK

Time for 10% or 90% of SDATA to 10% of SCLK

250

ns

Rising Edge Time, tSU:DAT

SMBus Data Hold Time, tBUF:DAT

SMBus Bus Free Time, tBUF

SCLK Falling Edge to SDATA

Time for 10% or 90% of SDATA to 10% of SCLK

250

0

Between start/stop condition

4.7

Valid Time, tVD:DAT

Master clocking in data

1. TMAX = 100°C, TMIN = 0°C

2. Operation at VDD = 5.0 V guaranteed by design; not production tested.

3. Guaranteed by design; not production tested.

ns

ms

ms

1

ms

1

ms

SCL

tLOW

tHD;STA

SDA

tBUF

P

S

tR

tHD;DAT

tF

tHIGH

tSU;DAT

tHD;STA

tSU;STA

S

Figure 2. Diagram for Serial Bus Timing

tSU;STO

P

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