CPM Electrical Characteristics
12.11SPI Slave AC Electrical Specifications
Table 27 provides the SPI slave timings as shown in Figure 67 and Figure 68.
Table 27. SPI Slave Timing
All Frequencies
Num
Characteristic
Unit
Min
Max
170 Slave cycle time
2
—
—
—
—
—
—
—
50
tcyc
ns
171 Slave enable lead time
172 Slave enable lag time
15
15
1
ns
173 Slave clock (SPICLK) high or low time
174 Slave sequential transfer delay (does not require deselect)
175 Slave data setup time (inputs)
tcyc
tcyc
ns
1
20
20
—
176 Slave data hold time (inputs)
ns
177 Slave access time
ns
SPISEL
(Input)
172
171
174
SPICLK
(CI=0)
(Input)
173
182
181
182
173
170
SPICLK
(CI=1)
(Input)
177
181
180
178
Undef
SPIMISO
(Output)
msb
175
Data
lsb
msb
msb
179
176
181 182
lsb
SPIMOSI
(Input)
msb
Data
Figure 67. SPI Slave (CP = 0) Timing Diagram
MPC885/MPC880 Hardware Specifications, Rev. 3
66
Freescale Semiconductor
FREESCALE [ Freescale ]
