PIC16F716-I-P Datasheet, PDF (22/136 Pages) Microchip Technology – 8-bit Flash-based Microcontroller with A/D Converter and Enhanced Capture/Compare/PWM

PIC16F716
FIGURE 3-2:
BLOCK DIAGRAM OF
RA4/T0CKI PIN
DATA
BUS
WR
PORT
WR
TRIS
Data Latch
D
Q
CK _Q
TRIS Latch
D
Q
CK _Q
RA4/T0CKI
N
VSS
VSS
Schmitt
Trigger
Input
Buffer
RD PORT
RD TRIS
QD
ENEN
Timer0 Clock Input
TABLE 3-1: SUMMARY OF REGISTERS ASSOCIATED WITH PORTA
Name
Bit 7 Bit 6 Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on
all other
Resets
PORTA
—
—
—
RA4 RA3 RA2 RA1 RA0 ---x 0000 ---u uuuu
TRISA
—
—
— TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 ---1 1111 ---1 1111
ADCON1
—
—
—
—
— PCFG2 PCFG1 PCFG0 ---- -000 ---- -000
Legend: x = unknown, u = unchanged, – = unimplemented locations read as ‘0’. Shaded cells are not used by
PORTA.
DS41206B-page 20
© 2007 Microchip Technology Inc.