PIC16F737-I Datasheet, PDF (55/276 Pages) Microchip Technology – 28/40/44-Pin, 8-Bit CMOS Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC16F7X7
FIGURE 5-6:
BLOCK DIAGRAM OF OSC2/CLKO/RA6 PIN
CLKO (FOSC/4)
(FOSC = 1x1)
1
From OSC1
Oscillator
Circuit
0
VDD
Data
Bus
WR
PORTA
WR
TRISA
D
Q
CK Q
Data Latch
D
Q
CK Q
TRIS Latch
RD TRISA
VDD
P
N
(FOSC = 1x1)
EMUL
VSS
EMUL + FOSC = 00x,010
(FOSC = 1x0,011)
Q
D
EMUL
OSC2/CLKO
TTL
Buffer
RD PORTA
EN
1
0
RA6 pin
(FOSC = 1x0,011)
VDD
P
N
(FOSC = 1x1)
EMUL + FOSC = 00x, 010
VSS
Note 1: CLKO signal is 1/4 of the FOSC frequency.
 2004 Microchip Technology Inc.
DS30498C-page 53