Datasheet

REV. A–76–
ADuC834
Parameter Min Typ Max Unit Figure
SPI MASTER MODE TIMING (CPHA = 0)
t
SL
SCLOCK Low Pulsewidth* 630 ns 76
t
SH
SCLOCK High Pulsewidth* 630 ns 76
t
DAV
Data Output Valid after SCLOCK Edge 50 ns 76
t
DOSU
Data Output Setup before SCLOCK Edge 150 ns 76
t
DSU
Data Input Setup Time before SCLOCK Edge 100 ns 76
t
DHD
Data Input Hold Time after SCLOCK Edge 100 ns 76
t
DF
Data Output Fall Time 10 25 ns 76
t
DR
Data Output Rise Time 10 25 ns 76
t
SR
SCLOCK Rise Time 10 25 ns 76
t
SF
SCLOCK Fall Time 10 25 ns 76
*Characterized under the following conditions:
a. Core clock divider bits CD2, CD1 and CD0 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 in SPICON SFR set to 0 and 0 respectively.
SCLOCK
(CPOL = 0)
SCLOCK
(CPOL = 1)
MOSI
MISO
MSB IN
BITS 6–1
BITS 6–1
LSB IN
LSB
MSB
t
DAV
t
DF
t
DR
t
SR
t
SF
t
DHD
t
DSU
t
SH
t
SL
Figure 76. SPI Master Mode Timing (CPHA = 0)