PIC16F84A-20E/SO Microchip Technology, PIC16F84A-20E/SO Datasheet - Page 261

• Manufacturer Part Number: PIC16F84A-20E/SO
• Description: IC MCU CMOS 20MHZ 1K FLSH 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F84A-20E/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• Program Memory Size: 1.75KB (1K x 14)
• 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: -40°C ~ 125°C
• Package / Case: 18-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Connectivity: -

16.3.5
1997 Microchip Technology Inc.
SSPIF
Interrupt flag
SCK
(CKP = 0)
SCK
(CKP = 1)
Slave Operation
SDO
SDI
In slave mode, the data is transmitted and received as the external clock pulses appear on SCK.
When the last bit is latched the SSPIF interrupt flag bit is set.
The clock polarity is selected by appropriately programming the CKP bit (SSPCON<4>). This
then would give waveforms for SPI communication as shown in
where the MSb is transmitted first. When in slave mode the external clock must meet the mini-
mum high and low times.
In sleep mode, the slave can transmit and receive data and wake the device from sleep if the
interrupt is enabled.
Figure 16-4: SPI Mode Waveform (Slave Mode w/o SS Control)
bit7
bit7
bit6
bit5
bit4
bit3
Section 16. BSSP
bit2
bit1
Figure 16-5
DS31016A-page 16-11
bit0
bit0
and
Next Q4 Cycle
Figure 16-5
after Q2
16