PIC18F2X1X Datasheet, PDF (350/380 Pages) Microchip Technology – 28/40/44-PIN FLASH MICROCONTROLLERS WITH 10-BIT A/D AND NANO WATT TECHNOLOGY

PIC18F2X1X/4X1X
FIGURE 25-21: USART SYNCHRONOUS TRANSMISSION (MASTER/SLAVE) TIMING
RC6/TX/CK
pin
RC7/RX/DT
pin
121
121
120
122
Note: Refer to Figure 25-5 for load conditions.
TABLE 25-22: USART SYNCHRONOUS TRANSMISSION REQUIREMENTS
Param
No.
Symbol
Characteristic
Min
Max
120 TckH2dtV SYNC XMIT (MASTER & SLAVE)
Clock High to Data Out Valid
PIC18FXXXX
—
40
PIC18LFXXXX —
100
121 Tckrf
Clock Out Rise Time and Fall Time PIC18FXXXX
—
20
(Master mode)
PIC18LFXXXX —
50
122 Tdtrf
Data Out Rise Time and Fall Time PIC18FXXXX
—
20
PIC18LFXXXX —
50
Units Conditions
ns
ns VDD = 2.0V
ns
ns VDD = 2.0V
ns
ns VDD = 2.0V
FIGURE 25-22: USART SYNCHRONOUS RECEIVE (MASTER/SLAVE) TIMING
RC6/TX/CK
pin
RC7/RX/DT
pin
125
126
Note: Refer to Figure 25-5 for load conditions.
TABLE 25-23: USART SYNCHRONOUS RECEIVE REQUIREMENTS
Param.
No.
Symbol
Characteristic
Min Max
125 TdtV2ckl SYNC RCV (MASTER & SLAVE)
Data Hold before CK ↓ (DT hold time)
126 TckL2dtl Data Hold after CK ↓ (DT hold time)
10
—
15
—
Units
ns
ns
Conditions
DS39636A-page 348
Preliminary
 2004 Microchip Technology Inc.