
(12 March 2002) REV.
P
rC
ADuC834
–
14
–
PRELIMINARY TECHNICAL DATA
Parameter
Min
T yp
Max
Unit
Figure
SPI MAST ER MODE T IMING (CPHA = 0)
t
SL
SCLOCK Low Pulsewidth
*
t
SH
SCLOCK High Pulsewidth
*
t
DAV
Data Output Valid after SCLOCK Edge
t
DOSU
Data Output Setup before SCLOCK Edge
t
DSU
Data Input Setup T ime before SCLOCK Edge
t
DHD
Data Input Hold T ime after SCLOCK Edge
t
DF
Data Output Fall T ime
t
DR
Data Output Rise T ime
t
SR
SCLOCK Rise T ime
t
SF
SCLOCK Fall T ime
630
630
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
8
8
8
8
8
8
8
8
8
8
50
150
100
100
10
10
10
10
25
25
25
25
NOT E
*
Characterized under the following conditions:
a. Core clock divider bits CD2, CD1 and CD0 bits in PLLCON SFR set to 0, 1, and 1 respectively, i.e., core clock frequency = 1.57 MHz and
b. SPI bit-rate selection bits SPR1 and SPR0 bits in SPICON SFR set to 0 and 0 respectively.
SCLOCK
(CPOL = 0)
t
DSU
SCLOCK
(CPOL = 1)
MOSI
MISO
MSB
LSB
LSB IN
BITS 6
1
BITS 6
1
MSB IN
t
DHD
t
DR
t
DAV
t
DF
t
DOSU
t
SH
t
SL
t
SR
t
SF
Figure 8. SPI Master Mode Timing (CPHA = 0)