MPC870 datasheet(64/84 Pages) FREESCALE

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MPC875/MPC870 Hardware Specifications, Rev. 3.0

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

Freescale Semiconductor

CPM Electrical Characteristics

13.10SPI Slave AC Electrical Specifications

Table 27 provides the SPI slave timings as shown in Figure 61 and Figure 62.

Figure 61. SPI Slave (CP = 0) Timing Diagram

Table 27. SPI Slave Timing

Num

Characteristic

All

Frequencies

Unit

Min

Max

170

Slave cycle time

—

tcyc

171

Slave enable lead time

—

172

Slave enable lag time

—

173

Slave clock (SPICLK) high or low time

—

tcyc

174

Slave sequential transfer delay (does not require deselect)

—

tcyc

175

Slave data setup time (inputs)

—

176

Slave data hold time (inputs)

—

177

Slave access time

—

SPIMOSI

(Input)

SPICLK

(CI=0)

(Input)

SPICLK

(CI=1)

(Input)

SPIMISO

(Output)

180

Data

181

182

173

170

msb

lsb

msb

181

177

182

175

179

SPISEL

(Input)

171

172

174

Data

msb

lsb

msb

Undef

181

178

176

182

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