MPC859TZP133 datasheet(68/92 Pages) FREESCALE

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MPC866/859 Hardware Speciﬁcations

MOTOROLA

CPM Electrical Characteristics

12.12 I2C AC Electrical Speciﬁcations

Table 28 shows the I2C (SCL < 100 kHz) timings.

Table 28. I2C Timing (SCL < 100 kHz)

Num

Characteristic

All Frequencies

Unit

Min

Max

200

SCL clock frequency (slave)

100

kHz

200

SCL clock frequency (master) 1

1 SCL frequency is given by SCL = BRGCLK_frequency / ((BRG register + 3) * pre_scaler * 2).

The ratio SyncClk/(BRGCLK/pre_scaler) must be greater or equal to 4/1.

1.5

100

kHz

202

Bus free time between transmissions

4.7

—

µs

203

Low period of SCL

4.7

—

µs

204

High period of SCL

4.0

—

µs

205

Start condition setup time

4.7

—

µs

206

Start condition hold time

4.0

—

µs

207

Data hold time

—

µs

208

Data setup time

250

—

209

SDL/SCL rise time

—

µs

210

SDL/SCL fall time

—

300

211

Stop condition setup time

4.7

—

µs

Freescale Semiconductor, Inc.

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