PIC16F870_13 Datasheet, PDF (133/172 Pages) Microchip Technology – 28/40-Pin, 8-Bit CMOS FLASH Microcontrollers

PIC16F870/871
FIGURE 14-11: USART SYNCHRONOUS TRANSMISSION (MASTER/SLAVE) TIMING
RC6/TX/CK
pin
RC7/RX/DT
pin
121
121
120
122
Note: Refer to Figure 14-3 for load conditions.
TABLE 14-7: USART SYNCHRONOUS TRANSMISSION REQUIREMENTS
Param
No.
Sym
Characteristic
Min Typ† Max Units Conditions
120 TckH2dtV SYNC XMIT (MASTER & SLAVE) ^Standard(F)
Clock high to data out valid
Extended(LF)
—
— 80 ns
—
— 100 ns
121 Tckrf
Clock out rise time and fall time
(Master mode)
Standard(F)
Extended(LF)
—
— 45 ns
—
— 50 ns
122 Tdtrf
Data out rise time and fall time
Standard(F)
—
— 45 ns
Extended(LF)
—
— 50 ns
† Data in “Typ” column is at 5V, 25C unless otherwise stated. These parameters are for design guidance only and are not
tested.
FIGURE 14-12: USART SYNCHRONOUS RECEIVE (MASTER/SLAVE) TIMING
RC6/TX/CK
pin
RC7/RX/DT
pin
125
126
Note: Refer to Figure 14-3 for load conditions.
TABLE 14-8: USART SYNCHRONOUS RECEIVE REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ†
Max
Units Conditions
125
TdtV2ckL SYNC RCV (MASTER & SLAVE)
Data setup before CK  (DT setup time)
15
—
—
ns
126
TckL2dtl Data hold after CK  (DT hold time)
15
—
—
ns
† Data in “Typ” column is at 5V, 25C unless otherwise stated. These parameters are for design guidance only and are not
tested.
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DS30569C-page 133