MC908AB32CFUE Datasheet, PDF (380/392 Pages) Freescale Semiconductor, Inc – Microcontrollers

Electrical Specifications
23.11 SPI Characteristics
Diagram
Number⁽¹⁾
Characteristic⁽²⁾
Symbol
Min
Max
Operating frequency
Master
Slave
f_BUS(M)
f_BUS(S)
f_BUS/128
DC
f_BUS/2
f_BUS
Cycle time
1
Master
Slave
2
Enable lead time
3
Enable lag time
t_cyc(M)
2
128
t_cyc(S)
1
—
t_Lead(S)
15
—
t_Lag(S)
15
—
Clock (SPSCK) high time
4
Master
Slave
t_SCKH(M)
100
—
t_SCKH(S)
50
—
Clock (SPSCK) low time
5
Master
Slave
t_SCKL(M)
100
—
t_SCKL(S)
50
—
Data setup time (inputs)
6
Master
Slave
t_SU(M)
45
—
t_SU(S)
5
—
Data hold time (inputs)
7
Master
Slave
Access time, slave⁽³⁾
8
CPHA = 0
CPHA = 1
9
Disable time, slave⁽⁴⁾
t_H(M)
0
—
t_H(S)
15
—
t_A(CP0)
0
40
t_A(CP1)
0
20
t_DIS(S)
—
25
Data valid time, after enable edge
10
Master
Slave⁽⁵⁾
t_V(M)
—
10
t_V(S)
—
40
Data hold time, outputs, after enable edge
11
Master
t_HO(M)
0
—
Slave
t_HO(S)
5
—
Notes:
1. Numbers refer to dimensions in Figure 23-1 and Figure 23-2.
2. All timing is shown with respect to 20% V_DD and 70% V_DD, unless noted; 100 pF load on all SPI pins.
3. Time to data active from high-impedance state
4. Hold time to high-impedance state
5. With 100 pF on all SPI pins
Unit
MHz
MHz
t_cyc
t_cyc
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Technical Data
380
Electrical Specifications
MC68HC908AB32 — Rev. 1.1
Freescale Semiconductor