PIC17C75X Datasheet, PDF (244/320 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers

PIC17C75X
FIGURE 20-15: USART SYNCHRONOUS TRANSMISSION (MASTER/SLAVE) TIMING
TX/CK
pin
RX/DT
pin
121
120
121
122
TABLE 20-15: USART SYNCHRONOUS TRANSMISSION REQUIREMENTS
Param.
No. Sym
Characteristic
Min Typ† Max Units Conditions
120 TckH2dtV SYNC XMIT (MASTER &
SLAVE)
Clock high to data out valid
PIC17CXXX
PIC17LCXXX
— — 50 ns
— — 75 * ns
121 TckRF
Clock out rise time and fall time PIC17CXXX
(Master Mode)
PIC17LCXXX
— — 25 ns
— — 40 * ns
122 TdtRF Data out rise time and fall time PIC17CXXX
— — 25 ns
PIC17LCXXX
— — 40 * 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 20-16: USART SYNCHRONOUS RECEIVE (MASTER/SLAVE) TIMING
TX/CK
pin
RX/DT
pin
125
126
TABLE 20-16: USART SYNCHRONOUS RECEIVE REQUIREMENTS
Parameter
No.
Sym
Characteristic
Min
Typ† Max Units Conditions
125
TdtV2ckL SYNC RCV (MASTER & SLAVE)
Data hold before CK↓ (DT hold 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.
DS30264A-page 244
Preliminary
© 1997 Microchip Technology Inc.