PIC16F84A-04/SS Microchip Technology, PIC16F84A-04/SS Datasheet - Page 229

• Manufacturer Part Number: PIC16F84A-04/SS
• Description: IC MCU FLASH 1KX14 EE 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F84A-04/SS

• Core Size: 8-Bit
• Program Memory Size: 1.75KB (1K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 68 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-SSOP
• Controller Family/series: PIC16F
• No. Of I/o's: 13
• Eeprom Memory Size: 64Byte
• Ram Memory Size: 68Byte
• Cpu Speed: 4MHz
• No. Of Timers: 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOPI3-DB16F84A - BOARD DAUGHTER ICEPIC3AC164307 - MODULE SKT FOR PM3 28SSOPAC164018 - MODULE SKT PROMATEII 20SSOP
• Data Converters: -
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

15.3.3
1997 Microchip Technology Inc.
SPI Master SSPM3:SSPM0 = 00xxb
Typical Connection
MSb
PROCESSOR 1
Serial Input Buffer
Figure 15-2
(Processor 1) initiates the data transfer by sending the SCK signal. Data is shifted out of both
shift registers on their programmed clock edge, and latched on the edge of the clock specified by
the SMP bit. Both processors should be programmed to same Clock Polarity (CKP), then both
controllers would send and receive data at the same time. Whether the data is meaningful (or
dummy data) depends on the application software. This leads to three scenarios for data trans-
mission:
• Master sends data — Slave sends dummy data
• Master sends data — Slave sends data
• Master sends dummy data — Slave sends data
Figure 15-2:
Shift Register
(SSPBUF)
(SSPSR)
shows a typical connection between two microcontrollers. The master controller
LSb
SPI Master/Slave Connection
SDO
SCK
SDI
Serial Clock
SDO
SCK
SDI
Section 15. SSP
SPI Slave SSPM3:SSPM0 = 010xb
MSb
Serial Input Buffer
Shift Register
PROCESSOR 2
(SSPBUF)
(SSPSR)
DS31015A-page 15-9
LSb
15