MC908AS60ACFU Datasheet, PDF (369/414 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Electrical Specifications
28.1.7 5.0 Vdc ± 0.5 V Serial Peripheral Interface (SPI) Timing
Num⁽¹⁾
Characteristic⁽²⁾
Symbol
Min
Max
Unit
Operating Frequency⁽³⁾
Master
Slave
f_BUS(M)
f_BUS(S)
f_BUS/128
dc
f_BUS/2
f_BUS
MHz
Cycle Time
1
Master
Slave
2 Enable Lead Time
3 Enable Lag Time
t_cyc(M)
2
128
t_cyc
t_cyc(S)
1
—
t_Lead
15
—
ns
t_Lag
15
—
ns
Clock (SCK) High Time
4
Master
Slave
t_W(SCKH)M
100
—
ns
t_W(SCKH)S
50
—
Clock (SCK) Low Time
5
Master
Slave
t_W(SCKL)M
100
—
ns
t_W(SCKL)S
50
—
Data Setup Time (Inputs)
6
Master
Slave
t_SU(M)
45
t_SU(S)
5
—
ns
—
Data Hold Time (Inputs)
7
Master
Slave
Access Time, Slave⁽⁴⁾
8 ^{CPHA = 0}
CPHA = 1
9 Slave Disable Time (Hold Time to High-Impedance State)
Enable Edge Lead Time to Data Valid⁽⁵⁾
10
Master
Slave
t_H(M)
0
t_H(S)
15
t_A(CP0)
0
t_A(CP1)
0
t_DIS
—
t_EV(M)
—
t_EV(S)
—
—
ns
—
40
ns
20
25
ns
10
ns
40
Data Hold Time (Outputs, after Enable Edge)
11
Master
Slave
12
Data Valid
Master (Before Capture Edge)
t_HO(M)
0
t_HO(S)
5
t_V(M)
90
—
ns
—
—
ns
13
Data Hold Time (Outputs)
Master (Before Capture Edge)
t_HO(M)
100
—
ns
1. Item numbers refer to dimensions in Figure 28-1 and Figure 28-2.
2. All timing is shown with respect to 30% V_DD and 70% V_DD, unless otherwise noted; assumes 100 pF load on all SPI pins.
3. f_BUS = the currently active bus frequency for the microcontroller.
4. Time to data active from high-impedance state.
5. With 100 pF on all SPI pins.
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Freescale Semiconductor
369