PIC16F7X7
• The Timer1 module current consumption has
1.0
DEVICE OVERVIEW
been greatly reduced from 20 µA (previous PIC16
devices) to 1.8 µA typical (32 kHz at 2V), which is
ideal for real-time clock applications. Refer to
Section 7.0 “Timer1 Module” for further details.
This document contains device specific information
about the following devices:
• PIC16F737
• PIC16F747
• PIC16F767
• PIC16F777
• Extended Watchdog Timer (WDT) that can have a
programmable period from 1 ms to 268s. The WDT
has its own 16-bit prescaler. Refer to Section 15.17
“Watchdog Timer (WDT)” for further details.
PIC16F737/767 devices are available only in 28-pin
packages, while PIC16F747/777 devices are available
in 40-pin and 44-pin packages. All devices in the
PIC16F7X7 family share common architecture with the
following differences:
• Two-Speed Start-up: When the oscillator is
configured for LP, XT or HS, this feature will clock
the device from the INTRC while the oscillator is
warming up. This, in turn, will enable almost
immediate code execution. Refer to
• The PIC16F737 and PIC16F767 have one-half of
the total on-chip memory of the PIC16F747 and
PIC16F777.
Section 15.17.3 “Two-Speed Clock Start-up
Mode” for further details.
• The 28-pin devices have 3 I/O ports, while the
40/44-pin devices have 5.
• Fail-Safe Clock Monitor: This feature will allow the
device to continue operation if the primary or
secondary clock source fails by switching over to
the INTRC.
• The 28-pin devices have 16 interrupts, while the
40/44-pin devices have 17.
• The 28-pin devices have 11 A/D input channels,
while the 40/44-pin devices have 14.
The available features are summarized in Table 1-1.
Block diagrams of the PIC16F737/767 and
PIC16F747/777 devices are provided in Figure 1-1 and
Figure 1-2, respectively. The pinouts for these device
families are listed in Table 1-2 and Table 1-3.
Additional information may be found in the “PICmicro®
Mid-Range MCU Family Reference Manual”
(DS33023) which may be obtained from your local
Microchip Sales Representative or downloaded from
the Microchip web site. The Reference Manual should
be considered a complementary document to this data
sheet and is highly recommended reading for a better
understanding of the device architecture and operation
of the peripheral modules.
• The Parallel Slave Port is implemented only on
the 40/44-pin devices.
• Low-Power modes: RC_RUN allows the core and
peripherals to be clocked from the INTRC, while
SEC_RUN allows the core and peripherals to be
clocked from the low-power Timer1. Refer to
Section 4.7 “Power-Managed Modes” for
further details.
• Internal RC oscillator with eight selectable
frequencies, including 31.25 kHz, 125 kHz,
250 kHz, 500 kHz, 1 MHz, 2 MHz, 4 MHz and
8 MHz. The INTRC can be configured as a primary
or secondary clock source. Refer to Section 4.5
“Internal Oscillator Block” for further details.
TABLE 1-1:
PIC16F7X7 DEVICE FEATURES
Key Features
PIC16F737
PIC16F747
PIC16F767
PIC16F777
Operating Frequency
Resets (and Delays)
DC – 20 MHz
DC – 20 MHz
DC – 20 MHz
DC – 20 MHz
POR, BOR
POR, BOR
POR, BOR
POR, BOR
(PWRT, OST)
(PWRT, OST)
(PWRT, OST)
(PWRT, OST)
Flash Program Memory (14-bit words)
Data Memory (bytes)
Interrupts
4K
4K
8K
8K
368
368
368
368
16
17
16
17
I/O Ports
Ports A, B, C
Ports A, B, C, D, E
Ports A, B, C
Ports A, B, C, D, E
Timers
3
3
3
3
3
3
Capture/Compare/PWM Modules
Master Serial Communications
Parallel Communications
10-bit Analog-to-Digital Module
Instruction Set
3
3
MSSP, AUSART
—
MSSP, AUSART
PSP
MSSP, AUSART
—
MSSP, AUSART
PSP
11 Input Channels
35 Instructions
14 Input Channels
35 Instructions
11 Input Channels
35 Instructions
14 Input Channels
35 Instructions
Packaging
28-pin PDIP
28-pin SOIC
28-pin SSOP
28-pin QFN
40-pin PDIP
44-pin QFN
44-pin TQFP
28-pin PDIP
28-pin SOIC
28-pin SSOP
28-pin QFN
40-pin PDIP
44-pin QFN
44-pin TQFP
2004 Microchip Technology Inc.
DS30498C-page 5
MICROCHIP [ MICROCHIP ]
