
MOTOROLA
ELECTRICAL CHARACTERISTICS
M68HC16 Z SERIES
A-50
USER’S MANUAL
Table A-30 SPI Timing
(V
DD
and V
DDSYN
= 5.0 Vdc
± 10% for 16.78 MHz, 5% for 20/25 MHz, V
SS
= 0 Vdc, T
A
= T
L
to T
H)
1
NOTES:
1. All AC timing is shown with respect to VIH/VIL levels unless otherwise noted.
Num
Function
Symbol
Min
Max
Unit
1
Operating Frequency
Master
Slave
fop
DC
1/4
fsys
2
Cycle Time
Master
Slave
tqcyc
4
510
—
tcyc
3
Enable Lead Time
Master
Slave
tlead
2
128
—
tcyc
4
Enable Lag Time
Master
Slave
tlag
—
2
1/2
—
SCK
tcyc
5
Clock (SCK) High or Low Time
Master
Slave2
2. For high time, n = External SCK rise time; for low time, n = External SCK fall time.
tsw
2 tcyc – 60
2 tcyc – n
255 tcyc
—
ns
6
Sequential Transfer Delay
Master
Slave (Does Not Require Deselect)
ttd
17
13
8192
—
tcyc
7
Data Setup Time (Inputs)
Master
Slave
tsu
30
20
—
ns
8
Data Hold Time (Inputs)
Master
Slave
thi
0
20
—
ns
9
Slave Access Time
ta
—1
tcyc
10
Slave MISO Disable Time
tdis
—2
tcyc
11
Data Valid (after SCK Edge)
Master
Slave
tv
—
50
ns
12
Data Hold Time (Outputs)
Master
Slave
tho
0
—
ns
13
Rise Time
Input
Output
tri
tro
—
2
30
s
ns
14
Fall Time
Input
Output
tfi
tfo
—
2
30
s
ns