PIC16F88-I/P Microchip Technology, PIC16F88-I/P Datasheet - Page 105

• Manufacturer Part Number: PIC16F88-I/P
• Description: IC MCU FLASH 4KX14 EEPROM 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F88-I/P

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 18-DIP (0.300", 7.62mm)
• 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
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 368 B
• Interface Type: SSP/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 7-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ACICE0202 - ADAPTER MPLABICE 18P 300 MILAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

When setting up an asynchronous transmission, follow
these steps:
1.
2.
3.
FIGURE 11-2:
FIGURE 11-3:
TABLE 11-7:
 2003 Microchip Technology Inc.
0Bh, 8Bh,
10Bh,18Bh
0Ch
18h
19h
8Ch
98h
99h
Legend:
Address
Write to TXREG
BRG Output
(Shift Clock)
RB5/SS/TX/CK pin
(Transmit Buffer
Reg. Empty Flag)
TRMT bit
(Transmit Shift
Reg. Empty Flag)
Write to TXREG
BRG Output
(Shift Clock)
RB5/SS/TX/CK pin
TXIF bit
(Interrupt Reg. Flag)
TRMT bit
(Transmit Shift
Reg. Empty Flag)
TXIF bit
Note:
Initialize the SPBRG register for the appropriate
baud rate. If a high-speed baud rate is desired,
set bit BRGH (Section 11.1 “USART Baud
Rate Generator (BRG)”).
Enable the asynchronous serial port by clearing
bit SYNC and setting bit SPEN.
If interrupts are desired, then set enable bit
TXIE.
x = unknown, - = unimplemented locations read as ‘0’. Shaded cells are not used for asynchronous transmission.
This timing diagram shows two consecutive transmissions.
INTCON
PIR1
RCSTA
TXREG USART Transmit Register
PIE1
TXSTA
SPBRG Baud Rate Generator Register
Name
REGISTERS ASSOCIATED WITH ASYNCHRONOUS TRANSMISSION
ASYNCHRONOUS MASTER TRANSMISSION
ASYNCHRONOUS MASTER TRANSMISSION (BACK TO BACK)
CSRC
SPEN
Bit 7
GIE
—
—
Word 1
Transmit Shift Reg.
Word 1
Transmit Shift Reg
Word 1
Word 1
ADIE
PEIE
ADIF
Bit 6
RX9
TX9
START Bit
START Bit
Word 2
TMR0IE
SREN
TXEN
RCIF
RCIE
Bit 5
Bit 0
CREN
SYNC
Bit 0
INTE
TXIE
Bit 4
TXIF
Preliminary
SSPIF CCP1IF
SSPIE CCP1IE TMR2IE
RBIE
Bit 3
Bit 1
—
—
Word 1
Bit 1
Word 1
4.
5.
6.
7.
8.
TMR0IF
BRGH
FERR
Bit 2
If 9-bit transmission is desired, then set transmit
bit TX9.
Enable the transmission by setting bit TXEN,
which will also set bit TXIF.
If 9-bit transmission is selected, the ninth bit
should be loaded in bit TX9D.
Load data to the TXREG register (starts
transmission).
If using interrupts, ensure that GIE and PEIE
(bits 7 and 6) of the INTCON register are set.
TMR2IF
OERR
TRMT
Bit 1
INTF
Bit 7/8
Word 2
Transmit Shift Reg.
Bit 7/8
TMR1IE
TMR1IF
RX9D
TX9D
PIC16F87/88
R0IF
Bit 0
STOP Bit START Bit
STOP Bit
-000 000x
-000 0000
0000 -00x
0000 0000
-000 0000
0000 -010
0000 0000
POR, BOR
Value on:
DS30487B-page 103
Word 2
-000 000u
-000 0000
0000 -00x
0000 0000
-000 0000
0000 -010
0000 0000
Value on
RESETS
all other
Bit 0