CPM Electrical Characteristics
SPISEL
(Input)
172
174
171
170
SPICLK
(CI=0)
(Input)
173
182
181
173
181
SPICLK
(CI=1)
(Input)
177
182
180
178
SPIMISO
(Output)
msb
msb
msb
Undef
175
Data
lsb
179
176
msb
181 182
Data
SPIMOSI
(Input)
lsb
Figure 68. SPI Slave (CP = 1) Timing Diagram
12.12I2C AC Electrical Specifications
2
Table 28 provides the I C (SCL < 100 KHz) timings.
Table 28. I2C Timing (SCL < 100 KHZ)
All Frequencies
Num
Characteristic
Unit
Min
Max
200 SCL clock frequency (slave)
0
100
100
—
—
—
—
—
—
—
1
KHz
KHz
µs
200 SCL clock frequency (master) 1
202 Bus free time between transmissions
203 Low period of SCL
1.5
4.7
4.7
4.0
4.7
4.0
0
µs
204 High period of SCL
µs
205 Start condition setup time
206 Start condition hold time
207 Data hold time
µs
µs
µs
208 Data setup time
250
—
ns
209 SDL/SCL rise time
µs
MPC885/MPC880 Hardware Specifications, Rev. 3
67
Freescale Semiconductor
FREESCALE [ Freescale ]
