PIC16F648A

Features:

• Internal and external oscillator options
- Precision Internal 4 MHz oscillator factory calibrated to ±1%
- Low Power Internal 37 kHz oscillator
- External Oscillator support for crystals and resonators.
- 1.2µA @ 32 kHz, 2.0V, typical
• Dual Speed Internal Oscillator:
- Run-time selectable between 4 MHz and 37 kHz
-4 µs wake-up from SLEEP, 3.0V, typical
• Power saving SLEEP mode
• Programmable weak pull-ups on PORTB
• Multiplexed Master Clear/Input-pin
• Watchdog Timer with independent oscillator for reliable operation Peripheral Features:
• 16 I/O pins with individual direction control
• High current sink/source for direct LED drive
• Analog comparator module with




Pinout






Specifications

Parameter Name	Value
Program Memory Type	Flash
Program Memory (KB)	7
CPU Speed (MIPS)	5
RAM Bytes	256
Data EEPROM (bytes)	256
Digital Communication Peripherals	1-A/E/USART,
Capture/Compare/PWM Peripherals	1 CCP
Timers	2 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	18

Description

This powerful (200 nanosecond instruction execution) yet easy-to-program (only 35 single word instructions) CMOS FLASH-based 8-bit microcontroller packs Microchip's powerful PIC16F648A architecture into an 18-pin package and is upwards compatible with the PIC16F628, PIC16C62XA, PIC16C5X and PIC12CXXX devices. The PIC16F648A features 4MHz internal oscillator, 256 bytes of EEPROM data memory, a capture/compare/PWM, a USART, 2 Comparators and a programmable voltage reference that make it ideal for analog/integrated level applications in automotive, industrial, appliances and consumer applications.

The PIC16F627A/628A/PIC16F648A are 18-Pin FLASHbased members of the versatile PIC16CXX family of low cost, high performance, CMOS, fully-static, 8-bit
microcontrollers. external clock source.

All PICmicro® microcontrollers employ an advanced RISC architecture. The PIC16F627A/628A/PIC16F648A have enhanced core features, eight-level deep stack, and
multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 14-bit wide instruction word with the separate 8-bit wide data. The two-stage instruction pipeline allows all instructions to execute in a singlecycle, except for program branches (which require two cycles). A total of 35 instructions (reduced instruction set) are available, complemented by a large register set.

A highly reliable Watchdog Timer with its own on-chip RC oscillator provides protection against software lockup. Table 1-1 shows the features of the PIC16F627A/ 628A/648A mid-range microcontroller families. A simplified block diagram of the PIC16F627A/628A/PIC16F648A is shown in Figure 3-1. The PIC16F627A/628A/648A series fits in applications ranging from battery chargers to low power remote