PIC17C4X Datasheet, PDF (160/240 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM/ROM Microcontroller

PIC17C4X
Applicable Devices 42 R42 42A 43 R43 44
FIGURE 17-9: USART MODULE: SYNCHRONOUS TRANSMISSION (MASTER/SLAVE) TIMING
RA5/TX/CK
pin
RA4/RX/DT
pin
121
121
120
122
TABLE 17-9: SERIAL PORT SYNCHRONOUS TRANSMISSION REQUIREMENTS
Parameter
No.
Sym
Characteristic
Min
Typ† Max Units Conditions
120
TckH2dtV SYNC XMIT (MASTER & SLAVE)
Clock high to data out valid
—
—
65
ns
121
TckRF
Clock out rise time and fall time (Master
—
Mode)
10
35
ns
122
TdtRF
Data out rise time and fall time
—
10
35
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 17-10: USART MODULE: SYNCHRONOUS RECEIVE (MASTER/SLAVE) TIMING
RA5/TX/CK
pin
RA4/RX/DT
pin
125
126
TABLE 17-10: SERIAL PORT 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.
DS30412C-page 160
© 1996 Microchip Technology Inc.