PIC16F870-E/SS Microchip Technology, PIC16F870-E/SS Datasheet - Page 143
![IC MCU CMOS 20MHZ 2K FLSH 28SSOP](/photos/6/81/68119/150-28-ssop_sml.jpg)
PIC16F870-E/SS
Manufacturer Part Number
PIC16F870-E/SS
Description
IC MCU CMOS 20MHZ 2K FLSH 28SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F870-ISO.pdf
(172 pages)
4.PIC16F870-ISO.pdf
(6 pages)
Specifications of PIC16F870-E/SS
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
28-SSOP
For Use With
I3-DB16F871 - BOARD DAUGHTER ICEPIC3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F870-ISO PDF datasheet #3
- PIC16F870-ISO PDF datasheet #4
- Current page: 143 of 688
- Download datasheet (3Mb)
1997 Microchip Technology Inc.
When peripheral functions are multiplexed onto general I/O pins, the functionality of the I/O pins
may change to accommodate the requirements of the peripheral module. Examples of this are
the Analog-to-Digital (A/D) converter and LCD driver modules, which force the I/O pin to the
peripheral function when the device is reset. In the case of the A/D, this prevents the device from
consuming excess current if any analog levels were on the A/D pins after a reset occurred.
With some peripherals, the TRIS bit is overridden while the peripheral is enabled. Therefore,
read-modify-write instructions (BSF, BCF, XORWF) with TRIS as destination should be avoided.
The user should refer to the corresponding peripheral section for the correct TRIS bit settings.
PORT pins may be multiplexed with analog inputs and analog V
of these pins is selected, to be an analog input or digital I/O, by clearing/setting the control bits
in the ADCON1 register (A/D Control Register1). When selected as an analog input, these pins
will read as ‘0’s.
The TRIS registers control the direction of the port pins, even when they are being used as ana-
log inputs. The user must ensure the TRIS bits are maintained set when using the pins as analog
inputs.
Note 1: If pins are multiplexed with Analog inputs, then on a Power-on Reset these pins are
Note 2: If pins are multiplexed with comparator inputs, then on a Power-on Reset these pins
Note 3: If pins are multiplexed with LCD driver segments, then on a Power-on Reset these
Note 4: Pins may be multiplexed with the Parallel Slave Port (PSP). For the PSP to function,
Note 5: At present the Parallel Slave Port (PSP) is only multiplexed onto PORTD and
configured as analog inputs, as controlled by the ADCON1 register. Reading port
pins configured as analog inputs read a ‘0’.
are configured as analog inputs, as controlled by the CMCON register. Reading port
pins configured as analog inputs read a ‘0’.
pins are configured as LCD driver segments, as controlled by the LCDSE register.
To configure the pins as a digital port, the corresponding bits in the LCDSE register
must be cleared. Any bit set in the LCDSE register overrides any bit settings in the
corresponding TRIS register.
the I/O pins must be configured as digital inputs and the PSPMODE bit must be set.
PORTE. The microprocessor port becomes enabled when the PSPMODE bit is set.
In this mode, the user must make sure that the TRISE bits are set (pins are config-
ured as digital inputs) and that PORTE is configured for digital I/O. PORTD will over-
ride the values in the TRISD register. In this mode the PORTD and PORTE input
buffers are TTL. The control bits for the PSP operation are located in TRISE.
Section 9. I/O Ports
REF
input. The operation of each
DS31009A-page 9-3
9
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