PIC16F631

Features:

• Only 35 instructions to learn:
- All single-cycle instructions except branches
• Operating speed:
- DC 20 MHz oscillator/clock input
- DC 200 ns instruction cycle
• Interrupt capability
• 8-level deep hardware stack
• Direct, Indirect and Relative Addressing modes
Special Microcontroller Features:
• Precision Internal Oscillator:
- Factory calibrated to ± 1%
- Software selectable frequency range of
8 MHz to 32 kHz
- Software tunable
- Two-Speed Start-up mode
- Crystal fail detect for critical applications
- Clock mode switching during operation for
power savings
• Power-Saving Sleep mode
• Wide operating voltage range (2.0V-5.5V)
• Industrial and Extended Temperature range
• Power-on Reset (POR)
• Power-up Timer (PWRTE) and Oscillator Start-up
Timer (OST)
• Brown-out Reset (BOR) with software control option
• Enhanced low-current Watchdog Timer (WDT)
with on-chip oscillator (software selectable
nominal 268 seconds with full prescaler) with
software enable
• Multiplexed Master Clear/Input pin
• Programmable code protection
• High Endurance Flash/EEPROM cell:
- 100,000 write Flash endurance
- 1,000,000 write EEPROM endurance
- Flash/Data EEPROM retention: > 40 years
• Enhanced USART module:
- Supports RS-485, RS-232 and LIN 2.0
- Auto-Baud Detect
- Auto-wake-up on Start bit
Low-Power Features:
• Standby Current:
- 50 nA @ 2.0V, typical
• Operating Current:
- 11A @ 32 kHz, 2.0V, typical
- 220A @ 4 MHz, 2.0V, typical
• Watchdog Timer Current:
- <1A @ 2.0V, typical
Peripheral Features:
• 17 I/O pins and 1 input only pin:
- High current source/sink for direct LED drive
- Interrupt-on-Change pin
- Individually programmable weak pull-ups
- Ultra Low-Power Wake-up (ULPWU)
• Analog Comparator module with:
- Two analog comparators
- Programmable on-chip voltage reference
(CVREF) module (% of VDD)
- Comparator inputs and outputs externally accessible
- SR Latch mode
- Timer 1 Gate Sync Latch
- Fixed 0.6V VREF
• A/D Converter:
- 10-bit resolution and 12 channels
• Timer0: 8-bit timer/counter with 8-bit
programmable prescaler
• Enhanced Timer1:
- 16-bit timer/counter with prescaler
- External Timer1 Gate (count enable)
- Option to use OSC1 and OSC2 in LP mode
as Timer1 oscillator if INTOSC mode selected
• Timer2: 8-bit timer/counter with 8-bit period
register, prescaler and postscaler
• Enhanced Capture, Compare, PWM+ module:
- 16-bit Capture, max resolution 12.5 ns
- Compare, max resolution 200 ns
- 10-bit PWM with 1, 2 or 4 output channels,
programmable "dead time", max frequency 20 kHz
- PWM output steering control
• Synchronous Serial Port (SSP):
- SPI mode (Master and Slave)
• I2C™ (Master/Slave modes):
- I2C™ address mask
• In-Circuit Serial ProgrammingTM (ICSPTM) via two pins




Pinout






Specifications

Parameter Name	Value
Program Memory Type	Flash
Program Memory (KB)	1.75
CPU Speed (MIPS)	5
RAM Bytes	64
Data EEPROM (bytes)	128
Timers	1 x 8-bit, 1 x 16-bit
Comparators	2
Temperature Range (C)	-40 to 125
Operating Voltage Range (V)	2 to 5.5
Pin Count	20

Ambient temperature under bias......................................................................................................-40° to +125°C
Storage temperature .................................................................................................................... -65°C to +150°C
Voltage on VDD with respect to VSS .................................................................................................. -0.3V to +6.5V
Voltage on MCLR with respect to Vss ............................................................................................... -0.3V to +13.5V
Voltage on all other pins with respect to VSS .......................................................................... -0.3V to (VDD + 0.3V)
Total power dissipation(1) ............................................................................................................................ 800 mW
Maximum current out of VSS pin ..................................................................................................................... 300 mA
Maximum current into VDD pin ........................................................................................................................ 250 mA
Input clamp current, IIK (VI < 0 or VI > VDD)..................................................................................................± 20 mA
Output clamp current, IOK (Vo < 0 or Vo >VDD)..............................................................................................± 20 mA
Maximum output current sunk by any I/O pin.................................................................................................... 25 mA
Maximum output current sourced by any I/O pin .............................................................................................. 25 mA
Maximum current sunk by PORTA, PORTB and PORTC (combined) .................................................................. 200 mA
Maximum current sourced PORTA, PORTB and PORTC (combined)................................................................... 200 mA
Note 1: Power dissipation is calculated as follows: PDIS = VDD x {IDD - IOH} + {(VDD - VOH) x IOH} + (VOL x IOL).




Description

The Low Pin-count (20) PIC16F631 Flash microcontroller products offer all of the advantages of the well recognized mid-range x14 architecture with standardized features including a wide operating voltage of 2.0-5.5 volts, on-board EEPROM Data Memory, and nanoWatt Technology. Standard analog peripherals include an analog comparator module with two comparators, and a programmable on-chip voltage reference.