M41T0 Просмотр технического описания (PDF) - STMicroelectronics

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M41T0

SERIAL REAL-TIME CLOCK

STMicroelectronics 

M41T0

Table 7. AC Characteristics

Symbol

Parameter(1)

Min

Typ

Max

fSCL

SCL Clock Frequency

0

400

tLOW

Clock Low Period

1.3

tHIGH Clock High Period

600

tR

SDA and SCL Rise Time

300

tF

SDA and SCL Fall Time

300

tHD:STA

START Condition Hold Time

(after this period the first clock pulse is generated)

600

tSU:STA

START Condition Setup Time

(only relevant for a repeated start condition)

600

tSU:DAT Data Setup Time

100

tHD:DAT(2) Data Hold Time

0

tSU:STO STOP Condition Setup Time

600

tBUF

Time the bus must be free before a new transmission can start 1.3

Note: 1. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.0 to 5.5V (except where noted).

2. Transmitter must internally provide a hold time to bridge the undefined region (300ns max.) of the falling edge of SCL.

Unit

kHz

µs

ns

ns

ns

ns

ns

ns

µs

ns

µs

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