PIC16C770 Microchip Technology Inc., PIC16C770 Datasheet - Page 29

• Manufacturer Part Number: PIC16C770
• Description: 18/20-pin, 8-bit Cmos Microcontrollers With 10/12-bit A/d
• Manufacturer: Microchip Technology Inc.

FIGURE 3-2:
2002 Microchip Technology Inc.
To A/D Converter input
and V
REF
+, V
BLOCK DIAGRAM OF RA2/AN2/V
REF
RD
PORT
- inputs
Data
Bus
WR
PORT
WR
TRIS
RD
TRIS
WR
ANSEL
(From V
Analog Select
VRH, VRL output enable
TRIS Mode
Data Latch
D
D
D
Sense input for
VRH, VRL amplifier
CK
CK
CK
REF
VRH, VRL outputs
-LVD-BOR Module)
Q
Q
Q
Q
Q
Q
Q
REF
-/VRL AND RA3/AN3/V
EN
D
PIC16C717/770/771
V
V
P
N
SS
DD
Schmitt
Trigger
REF
+/VRH
V
SS
DS41120B-page 27
V
DD