PIC18F2221_1 Datasheet, PDF (369/402 Pages) Microchip Technology – Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F2221/2321/4221/4321 FAMILY
FIGURE 27-21: EUSART SYNCHRONOUS TRANSMISSION (MASTER/SLAVE) TIMING
RC6/TX/CK
pin
RC7/RX/DT
pin
121
121
120
122
TABLE 27-22: EUSART 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 27-22: EUSART SYNCHRONOUS RECEIVE (MASTER/SLAVE) TIMING
RC6/TX/CK
pin
RC7/RX/DT
pin
125
126
TABLE 27-23: EUSART 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
© 2009 Microchip Technology Inc.
DS39689F-page 369