PIC16F874-20/L Microchip Technology, PIC16F874-20/L Datasheet - Page 500

• Manufacturer Part Number: PIC16F874-20/L
• Description: IC MCU FLASH 4KX14 EE 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F874-20/L

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 192 B
• Interface Type: MSSP, PSP, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 70 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, DM163022, DV164120
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164309 - MODULE SKT FOR PM3 44PLCC444-1001 - DEMO BOARD FOR PICMICRO MCUDVA16XL441 - ADAPTER DEVICE ICE 44PLCC309-1040 - ADAPTER 44-PLCC ZIF TO 40-DIP309-1039 - ADAPTER 44-PLCC TO 40-DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / Rohs Status: Details

PICmicro MID-RANGE MCU FAMILY
27.2
DS31027A-page 27-4
Configuration Word Bits
These configuration bits specify some of the modes of the device, and are programmed by a
device programmer, or by using the In-Circuit Serial Programming (ICSP) feature of the midrange
devices. The device is not able to read the values of these bits, and there placement is automat-
ically taken care of when you select the device in you device programmer. For additional infor-
mation, please refer to the Programming Specification of the Device.
CP1:CP0: Code Protection bits
11 = Code protection off
10 = See device data sheet
01 = See device data sheet
00 = All memory is code protected
DP: Data EEPROM Memory Code Protection bit
1 = Code protection off
0 = Data EEPROM Memory is code protected
BODEN: Brown-out Reset Enable bit
1 = BOR enabled
0 = BOR disabled
PWRTE: Power-up Timer Enable bit
1 = PWRT disabled
0 = PWRT enabled
MCLRE: MCLR Pin Function Select bit
1 = Pin’s function is MCLR
0 = Pin’s function is as a digital I/O. MCLR is internally tied to V
WDTE: Watchdog Timer Enable bit
1 = WDT enabled
0 = WDT disabled
Note 1: Always ensure that your device programmer has the same device selected as you
Note 2: Microchip recommends that the desired configuration bit states be embedded in to
Note:
Note:
Note:
Note 1: Enabling Brown-out Reset automatically enables Power-up Timer (PWRT) regard-
Note 2: Some original PICmicros have the polarity of this bit reversed.
Note 3:
are programming.
the application source code. This is easily done in the MPASM assembler by the use
of the CONFIG directive. See Subsection
Some devices may use more or less bits to determine the code protect. Presently
there are also some devices that use only one bit (CP0). For these devices the bit
description is:
1 = Code protection off
0 = Code protection on
This bit is used when a device with ROM program memory also has Data EEPROM
memory.
Enabling Brown-out Reset automatically enables the Power-up Timer (PWRT)
regardless of the value of bit PWRTE. Ensure the Power-up Timer is enabled any-
time Brown-out Reset is enabled.
less of the value of bit PWRTE. Ensure the Power-up Timer is enabled anytime
Brown-out Reset is enabled.
27.2.1 “MPASM’s CONFIG Directive.”
DD
.
1997 Microchip Technology Inc.