PIC16HV540 Datasheet, PDF (5/36 Pages) Microchip Technology – Enhanced PIC16C54 EPROM-Based 8-Bit CMOS Microcontroller With On-Chip Voltage Regulator

PIC16HV540
TABLE 3-1: PINOUT DESCRIPTION - PIC16HV540
Name
DIP, SOIC SSOP I/O/P Input
No.
No. Type Levels
Description
RA0
17
19 I/O TTL Independently regulated Bi-directional I/O port — VIO
RA1
18
20 I/O TTL
RA2
1
1 I/O TTL
RA3
2
2 I/O TTL
RB0
6
7 I/O TTL High-voltage Bi-directional I/O port. Wake up on
RB1
7
8 I/O TTL Sourced from VDD.
pin change.
RB2
8
9 I/O TTL
RB3
9
10 I/O TTL
RB4
10
11 I/O TTL
RB5
11
12 I/O TTL
RB6
12
13 I/O TTL
RB7
13
14 I/O TTL
Wake up on SLOW
rising pin change.
T0CKI
MCLR/VPP
3
3
I
ST
4
4
I
ST
OSC1/CLKIN
16
OSC2/CLKOUT
15
18
I
ST
17 O
—
VDD
14
15,16 P
—
VSS
5
5,6 P
—
Legend: I = input, O = output, I/O = input/output,
P = power, — = Not Used, TTL = TTL input,
ST = Schmitt Trigger input
Clock input to Timer 0. Must be tied to VSS or VDD, if not in
use, to reduce current consumption.
Master clear (reset) input/programming voltage input. This
pin is an active low reset to the device. Voltage on the
MCLR/VPP pin must not exceed VDD to avoid unintended
entering of programming mode.
Oscillator crystal input/external clock source input.
Oscillator crystal output. Connects to crystal or resonator in
crystal oscillator mode. In RC mode, OSC2 pin outputs
CLKOUT which has 1/4 the frequency of OSC1, and denotes
the instruction cycle rate.
Positive supply.
Ground reference.
© 1998 Microchip Technology Inc.
Preliminary
DS40197A-page 5