Microchip PIC18F2680 Manual

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2010-2015 Microchip Technology Inc. DS30009622M-page 1
PIC18F2XXX/4XXX FAMILY
1.0 DEVICE OVERVIEW
This document includes the programming specifications for the following devices:
2.0 PROGRAMMING OVERVIEW
PIC18F2XXX/4XXX Family devices can be programmed using either the high-voltage In-Circuit Serial Programming™
(ICSP™) method or the low-voltage ICSP method. Both methods can be done with the device in the user’s system. The
low-voltage ICSP method is slightly different than the high-voltage method and these differences are noted where
applicable.
This programming specification applies to the PIC18F2XXX/4XXX Family devices in all package types.
2.1 Hardware Requirements
In High-Voltage ICSP mode, PIC18F2XXX/4XXX Family devices require two programmable power supplies: one for
VDD and one for MCLR/VPP/RE3. Both supplies should have a minimum resolution of 0.25V. Refer to Section 6.0 “AC/
DC Characteristics Timing Requirements for Program/Verify Test Mode” for additional hardware parameters.
2.1.1 LOW-VOLTAGE ICSP PROGRAMMING
In Low-Voltage ICSP mode, PIC18F2XXX/4XXX Family devices can be programmed using a VDD source in the
operating range. The MCLR/VPP/RE3 does not have to be brought to a different voltage, but can instead be left at the
normal operating voltage. Refer to Section 6.0 “AC/DC Characteristics Timing Requirements for Program/Verify
Test Mode” for additional hardware parameters.
2.2 Pin Diagrams
The pin diagrams for the PIC18F2XXX/4XXX Family are shown in Figure 2-1, Figure 2-2, Figure 2-3, Figure 2-4,
Figure 2-5.
• PIC18F2221 • PIC18F2580 • PIC18F4480
• PIC18F2321 • PIC18F2585 • PIC18F4510
• PIC18F2410 • PIC18F2610 • PIC18F4515
• PIC18F2420 • PIC18F2620 • PIC18F4520
• PIC18F2423 • PIC18F2680 • PIC18F4523
• PIC18F2450 • PIC18F2682 • PIC18F4525
• PIC18F2455 • PIC18F2685 • PIC18F4550
• PIC18F2458 • PIC18F4221 • PIC18F4553
• PIC18F2480 • PIC18F4321 • PIC18F4580
• PIC18F2510 • PIC18F4410 • PIC18F4585
• PIC18F2515 • PIC18F4420 • PIC18F4610
• PIC18F2520 • PIC18F4423 • PIC18F4620
• PIC18F2523 • PIC18F4450 • PIC18F4680
• PIC18F2525 • PIC18F4455 • PIC18F4682
• PIC18F2550 • PIC18F4458 • PIC18F4685
• PIC18F2553
Flash Microcontroller Programming Specification
PIC18F2XXX/4XXX FAMILY
DS30009622M-page 2 2010-2015 Microchip Technology Inc.
TABLE 2-1: PIN DESCRIPTIONS (DURING PROGRAMMING): PIC18F2XXX/4XXX FAMILY
The following devices are included in 28-pin SPDIP, PDIP and SOIC parts:
The following devices are included in 28-pin SSOP parts:
FIGURE 2-1: 28-Pin SPDIP, PDIP, SOIC,SSOP
Pin Name
During Programming
Pin Name Pin Type Pin Description
MCLR/V /RE3 VPP PP P Programming Enable
VDD(2) VDD P Power Supply
VSS(2) VSS P Ground
RB5 PGM I Low-Voltage ICSP™ Input when LVP Configuration bit equals ‘1’(1)
RB6 PGC I Serial Clock
RB7 PGD I/O Serial Data
Legend: I = Input, O = Output, P = Power
Note 1: See Figure 5-1 for more information.
2: All power supply (VDD) and ground (VSS) pins must be connected.
• PIC18F2221 • PIC18F2480 • PIC18F2580
• PIC18F2321 • PIC18F2510 • PIC18F2585
• PIC18F2410 • PIC18F2515 • PIC18F2610
• PIC18F2420 • PIC18F2520 • PIC18F2620
• PIC18F2423 • PIC18F2523 • PIC18F2680
• PIC18F2450 • PIC18F2525 • PIC18F2682
• PIC18F2455 • PIC18F2550 • PIC18F2685
• PIC18F2458 • PIC18F2553
• PIC18F2221 • PIC18F2321
10
11
2
3
4
5
6
1
8
7
9
12
13
14 15
16
17
18
19
20
23
24
25
26
27
28
22
21
MCLR/VPP/RE3
RA0
RA1
RA2
RA3
RA4
RA5
VSS
OSC1
OSC2
RC0
RC1
RC2
RC3
RB7/PGD
RB6/PGC
RB5/PGM
RB4
RB3
RB2
RB1
RB0
VDD
VSS
RC7
RC6
RC5
RC4
PIC18F2XXX

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Model: PIC18F2680

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