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MC68HC08AS32A Datasheet, PDF (282/296 Pages) Motorola, Inc – Microcontrollers
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Freescale Semiconductor, Inc.
Electrical Specifications
18.8 5.0-Vdc ± 10% Serial Peripheral Interface (SPI) Timing
Num(1)
Characteristic(2)
Symbol
Min
Max
Unit
Operating frequency(3)
Master
Slave
fBUS(M)
fBUS(S)
fBUS/128
dc
fBUS/2
fBUS
MHz
Cycle time
1
Master
Slave
2
Enable lead time
3
Enable lag time
tCYC(M)
2
tCYC(S)
1
tLEAD
15
tLAG
15
128
tCYC
—
—
ns
—
ns
Clock (SCK) high time
4
Master
Slave
tW(SCKH)M
tW(SCKH)S
100
50
—
ns
—
Clock (SCK) low time
5
Master
Slave
tW(SCKL)M
tW(SCKL)S
100
50
—
ns
—
Data setup time, inputs
6
Master
Slave
tSU(M)
45
tSU(S)
5
—
ns
—
Data hold time, inputs
7
Master
Slave
tH(M)
0
tH(S)
15
—
ns
—
Access time, slave(4)
8
CPHA = 0
CPHA = 1
tA(CP0)
0
tA(CP1)
0
9
Slave disable time, hold time to high-impedance state
tDIS
—
40
ns
20
25
ns
Enable edge lead time to data valid(5)
10
Master
Slave
tEV(M)
—
tEV(S)
—
10
ns
40
Enable edge lead time to data invalid
11
Master
Slave
12
Data valid
Master (before capture edge)
tEI(M)
0
tEI(S)
5
tV(M)
90
—
ns
—
---
ns
13
Data hold time (outputs)
Master (after capture edge)
tHO(M)
100
---
ns
1. Item numbers refer to dimensions in Figure 18-2 and Figure 18-3.
2. All timing is shown with respect to 30% VDD and 70% VDD, unless otherwise noted; assumes 100 pF load on all SPI pins.
3. fBUS = 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
Data Sheet
282
Electrical Specifications
For More Information On This Product,
Go to: www.freescale.com
MC68HC08AS32A — Rev. 1
MOTOROLA
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