PIC18F258 Datasheet, PDF (353/384 Pages) Microchip Technology – High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN

PIC18FXX8
FIGURE 27-20: USART SYNCHRONOUS TRANSMISSION (MASTER/SLAVE) TIMING
RC6/TX/CK
pin
RC7/RX/DT
pin
121
121
120
122
Note: Refer to Figure 27-4 for load conditions.
TABLE 27-21: USART SYNCHRONOUS TRANSMISSION REQUIREMENTS
Param
No.
Symbol
Characteristic
Min
Max
120 TckH2dtV SYNC XMIT (Master & Slave)
Clock high to data-out valid
PIC18FXX8
—
40
PIC18LFXX8 —
100
121 Tckrf
Clock out rise time and fall time
PIC18FXX8
—
20
(Master mode)
PIC18LFXX8 —
50
122 Tdtrf
Data-out rise time and fall time
PIC18FXX8
—
20
PIC18LFXX8 —
50
Units Conditions
ns
ns
ns
ns
ns
ns
FIGURE 27-21: USART SYNCHRONOUS RECEIVE (MASTER/SLAVE) TIMING
RC6/TX/CK
pin
RC7/RX/DT
pin
125
126
Note: Refer to Figure 27-4 for load conditions.
TABLE 27-22: USART SYNCHRONOUS RECEIVE REQUIREMENTS
Param
No.
Symbol
Characteristic
125 TdtV2ckl SYNC RCV (Master & Slave)
Data-hold before CK ↓ (DT hold time)
126 TckL2dtl Data-hold after CK ↓ (DT hold time)
Min Max Units
10
—
ns
15
—
ns
Conditions
 2002 Microchip Technology Inc.
Preliminary
DS41159B-page 351