PIC16F946T

Part: PIC16F917 — Microchip Technology (PIC16F913/914/916/917/946 family)

Type: 8-Bit Flash CMOS Microcontroller with LCD Driver

Description: 8-bit PIC16 RISC MCU with 8K words (14 KB) Flash, 352 bytes SRAM, 256 bytes EEPROM, up to 20 MHz clock, 2.0–5.5 V operation, a 24-segment LCD driver and nanoWatt low-power technology.

Operating Conditions:

• Supply voltage: 2.0–5.5 V
• Operating temperature: -40 to +125 °C (industrial and extended ranges)
• Clock: DC – 20 MHz (200 ns instruction cycle)
• Internal oscillator: 8 MHz to 125 kHz, factory calibrated to ±1% typical

Absolute Maximum Ratings:

• Max supply voltage (VDD to VSS): -0.3 to +6.5 V
• MCLR voltage: -0.3 to +13.5 V
• Voltage on other pins: -0.3 V to VDD + 0.3 V
• Max current into VDD pin: 95 mA
• Max current out of VSS pin: 95 mA
• Max current per I/O pin: 25 mA sink or source
• Max current, all ports combined: 90 mA sink or 90 mA source
• Total power dissipation: 800 mW
• Storage temperature: -65 to +150 °C
• Ambient temperature under bias: -40 to +125 °C

Key Specs:

• Standby current: <100 nA typical at 2.0 V
• Operating current: 11 μA typical at 32 kHz, 2.0 V
• Operating current: 220 μA typical at 4 MHz, 2.0 V
• Watchdog Timer current: 1 μA typical at 2.0 V
• Memory: 8K words Flash, 352 B SRAM, 256 B EEPROM
• I/O: 35 pins
• ADC: 10-bit, 8 channels
• LCD: 24 segment drivers, four commons
• Flash endurance 100,000 writes; EEPROM endurance 1,000,000 writes; retention >40 years

Features:

• 35-instruction RISC CPU, single-cycle except branches
• 8-level hardware stack
• Precision internal oscillator with Two-Speed Start-up, fail-safe clock monitor and clock switching
• 31 kHz internal oscillator
• POR, PWRT, OST, BOR and enhanced low-current WDT
• Two analog comparators with programmable voltage reference
• 2 CCP modules (16-bit capture, 16-bit compare, 10-bit PWM)
• AUSART and SSP with I²C
• Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit)
• High-current I/O for direct LED drive, interrupt-on-change, weak pull-ups
• ICSP via two pins
• Programmable code protection

Applications:

• LCD-based low-power embedded products

Package:

• 40-pin (PIC16F914/917)
• 44-pin TQFP
• 44-pin QFN

• Precision Internal Oscillator:
• -Factory calibrated to ±1%, typical
• -Software selectable frequency range of 8 MHz to 125 kHz
• -Software tunable
• -Two-Speed Start-up mode
• -External Oscillator fail detect for critical applications
• -Clock mode switching during operation for power savings
• Software selectable 31 kHz internal oscillator
• Power-Saving Sleep mode
• Wide operating voltage range (2.0V-5.5V)
• Industrial and Extended temperature range
• Power-on Reset (POR)
• Power-up Timer (PWRT) 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 with pull-up/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

Each PORTA pin is multiplexed with other functions. The pins and their combined functions are briefly described here. For specific information about individual functions, refer to the appropriate section in this data sheet.

Note 1: This is the limit to which VDD can be lowered in Sleep mode without losing RAM data.

Note 1: Power dissipation is calculated as follows: PDIS = VDD x {IDD -∑ IOH} + ∑ {(VDD - VOH) x IOH} + ∑ (VOL x IOL). 2: PORTD and PORTE are not implemented in PIC16F913/916 devices.

† NOTICE: Stresses above those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

FIGURE 19-1: PIC16F913/914/916/917/946 VOLTAGE-FREQUENCY GRAPH, -40°C ≤ TA ≤ +125°C