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Chapter 5 / The Electronics
Data Data Latch
Bus
D Q
VDD
WR
Port
CK Q
P I/O pin (1)
TRIS Latch
N
D Q
WR
TRIS
VSS
CK Q
Analog
Input
Mode
RD
TRIS
TTL
Input
Buffer
Q D
EN
RD Port
To A/D Converter
Note 1: I/O pins have protection diodes to VDD and VSS.
Figure 5.33
Block diagram of RA3:RA0 and RA5 pins.
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