PIC16F87-E/ML Microchip Technology, PIC16F87-E/ML Datasheet - Page 5

• Manufacturer Part Number: PIC16F87-E/ML
• Description: IC MCU FLASH 4KX14 EEPROM 28QFN
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F87-E/ML

• 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: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• For Use With: XLT28QFN3 - SOCKET TRAN ICE 18DIP/28QFNAC164033 - ADAPTER 28QFN TO 18DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

8. Module: Oscillator Configurations
REGISTER 4-1:
© 2008 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-6
bit 5-0
The Device Data Sheet has been revised to reflect
changes in the operation of the OSCTUNE
register, beginning with silicon Revision C0. The
following text and table describe that register’s
implementation for silicon Revision B1.
The OSCTUNE register adjusts the frequencies of
the INTOSC and INTRC clock sources.
OSCTUNE bit 0 is implemented. When the register
is modified, the INTOSC and INTRC frequencies
begin shifting to the new frequency. The INTRC
clock reaches the new frequency within eight clock
cycles (approximately 8 * 32 μs or 256 μs).
U-0
—
(OSCTUNE Register)
Unimplemented: Read as ‘0’
TUN<5:0>: Frequency Tuning bits
011111 = Maximum frequency
011110 =
•
•
•
000001 =
000000 = Center frequency. Oscillator module is running at the calibrated frequency.
111111 =
•
•
•
100000 = Minimum frequency
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
Work around
N/A
Date Codes that pertain to this issue:
All date codes associated with silicon revision B1.
This issue is not found in devices with silicon
revision C2 (Revision ID 0 1000) or later.
R/W-0
TUN2
PIC16F87/88
x = Bit is unknown
R/W-0
TUN1
DS80171L-page 5
R/W-0
TUN0
bit 0