PIC16F87-E/SS Microchip Technology, PIC16F87-E/SS Datasheet - Page 2

• Manufacturer Part Number: PIC16F87-E/SS
• Description: IC MCU FLASH 4KX14 EEPROM 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F87-E/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

PIC16F87/88
Change 2. Register 4-1
REGISTER 4-1:
DS80365A-page 2
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-6
bit 5-1
bit 0
The descriptions of bits<5:0> are modified, as
highlighted by the change bars.
U-0
—
Unimplemented: Read as ‘0’
TUN<5:1>: Frequency Tuning bits
01111 = Maximum frequency
01110 =
•
•
•
00001 =
00000 = Center frequency. Oscillator module is running at the calibrated frequency.
11111 =
•
•
•
10000 = Minimum frequency
TUN0: Placeholder – Bit has no effect on the INTRC frequency. It is provided to enable the
OSCTUNE2 register to be incremented and decremented easily.
U-0
—
OSCTUNE: OSCILLATOR TUNING REGISTER (ADDRESS 90h)
W = Writable bit
‘1’ = Bit is set
R/W-0
TUN5
R/W-0
TUN4
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
TUN3
R/W-0
TUN2
© 2008 Microchip Technology Inc.
x = Bit is unknown
R/W-0
TUN1
R/W-0
TUN0
bit 0