PIC16F785-I/SO Microchip Technology, PIC16F785-I/SO Datasheet - Page 105

• Manufacturer Part Number: PIC16F785-I/SO
• Description: IC PIC MCU FLASH 2KX14 20SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F785-I/SO

• Program Memory Type: FLASH
• Program Memory Size: 3.5KB (2K x 14)
• Package / Case: 20-SOIC (7.5mm Width)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 17
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: RS- 232/USB
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DV164120, DM163029
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 14-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SO1-1 - SOCKET TRANS ICE 20DIP TO 20SOICXLT18SO-1 - SOCKET TRANSITION 18SOIC 300MILAC162060 - HEADER INTRFC MPLAB ICD2 20PINAC164039 - MODULE SKT PROMATE II 20DIP/SOIC
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

15.0
The PIC16F785 has a host of features intended to
maximize system reliability, minimize cost through
elimination of external components, provide power
saving features and offer code protection.
These features are:
• Reset
• Interrupts
• Watchdog Timer (WDT)
• Oscillator selection
• Sleep
• Code protection
• ID Locations
• In-Circuit Serial Programming™ (ISCP™)
The PIC16F785 has two timers that offer necessary
delays on power-up. One is the Oscillator Start-up
Timer (OST), intended to keep the chip in Reset until
the crystal oscillator is stable. The other is the Power-
up Timer (PWRT), which provides a fixed delay of
64 ms (nominal) on power-up only, designed to keep
the part in Reset while the power supply stabilizes.
There is also circuitry to reset the device if a brown-out
occurs, which can use the Power-up Timer to provide
at least a 64 ms Reset. With these three functions on-
chip, most applications need no external Reset
circuitry.
The Sleep mode is designed to offer a very low current
Power-down mode. The user can wake-up from Sleep
through:
• External Reset
• Watchdog Timer Wake-up
• An interrupt
Several oscillator options are also made available to
allow the part to fit the application. The INTOSC option
saves system cost, while the LP crystal option saves
power. A set of configuration bits are used to select
various options (see Register 15-1).
 2004 Microchip Technology Inc.
- Power-on Reset (POR)
- Power-up Timer (PWRT)
- Oscillator Start-up Timer (OST)
- Brown-out Reset (BOR)
SPECIAL FEATURES OF THE
CPU
Preliminary
15.1
The configuration bits can be programmed (read as
‘0’), or left unprogrammed (read as '1’) to select various
device configurations as shown in Register 15-1.
These bits are mapped in program memory location
2007h.
15.2
The Brown-out Reset (BOR), Power-on Reset (POR),
8 MHz internal oscillator (HFINTOSC), Bandgap Offset
(BGOFF) and Bandgap Temperature Compensation
(BGTMP) are factory calibrated and should not be
altered. These calibration values are stored in five
calibration words which are mapped in program
memory locations 2008h and 2009h respectively.
The calibration words are not erased when the device
is erased when using the procedure described in the
PIC16F785
(DS41237). Therefore, it is not necessary to store and
reprogram these values when the device is erased.
Note:
Note:
Configuration Bits
Calibration Bits
memory space. It belongs to the special
configuration memory space (2000h –
3FFFh), which can be accessed only during
programming. See PIC16F785 Memory
Programming Specification (DS41237) for
more information.
the user program memory space. They
belong to the special configuration memory
space (2000h – 3FFFh), which can be
accessed only during programming. See
PIC16F785 Memory Programming Speci-
fication (DS41237) for more information.
Address 2007h is beyond the user program
Addresses 2008h and 2009h are beyond
Memory
Programming
PIC16F785
DS41249A-page 103
Specification