PIC16F726-I/SP Microchip Technology Inc., PIC16F726-I/SP Datasheet - Page 173

• Manufacturer Part Number: PIC16F726-I/SP
• Description: 28 PIN, 14 KB FLASH, 1.8V-5.5V, 16 MHZ INT. OSC.
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F726-I/SP

• A/d Inputs: 11-Channel, 8-Bit
• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Frequency: 20 MHz
• Input Output: 25
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 14K Bytes
• Ram Size: 368 Bytes
• Resistance, Drain To Source On: Bytes
• Serial Interface: I2C, SPI, AUSART
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 1.8-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

17.1.2.4
The SS pin allows Synchronous Slave mode operation.
The SPI must be in Slave mode with SS pin control
enabled (SSPM<3:0> = 0100). The associated TRIS bit
for the SS pin must be set, making SS an input.
In Slave Select mode, when:
• SS = 0, The device operates as specified in
• SS = 1, The SPI module is held in Reset and the
FIGURE 17-6:
© 2008 Microchip Technology Inc.
SS
SCK
(CKP = 0
CKE = 0)
SCK
(CKP = 1
CKE = 0)
Write to
SSPBUF
SDO
SDI
(SMP = 0)
Input
Sample
(SMP = 0)
SSPIF
Interrupt
Flag
SSPSR to
SSPBUF
Section 17.1.2 “Slave Mode”.
SDO pin will be tri-stated.
Note 1: When the SPI is in Slave mode with SS pin
2: If the SPI is used in Slave mode with CKE
control enabled (SSPM<3:0> = 0100), the
SPI module will reset if the SS pin is driven
high.
set, the SS pin control must be enabled.
Slave Select Operation
SLAVE SELECT SYNCHRONIZATION WAVEFORM
bit 7
bit 7
bit 6
Preliminary
PIC16F72X/PIC16LF72X
When the SPI module resets, the bit counter is cleared
to ‘0’. This can be done by either forcing the SS pin to
a high level or clearing the SSPEN bit. Figure 17-6
shows the timing waveform for such a synchronization
event.
17.1.2.5
While in Sleep mode, the slave can transmit/receive
data. The SPI Transmit/Receive Shift register operates
asynchronously to the device on the externally supplied
clock source. This allows the device to be placed in
Sleep mode and data to be shifted into the SPI Trans-
mit/Receive Shift register. When all 8 bits have been
received, the SSP Interrupt Flag bit will be set and if
enabled, will wake the device from Sleep.
Note:
SSPSR must be reinitialized by writing to
the SSPBUF register before the data can
be clocked out of the slave again.
SSPSR must be reinitialized by writing to
the SSPBUF register before the data can
be clocked out of the slave again.
Sleep in Slave Mode
bit 7
bit 7
DS41341B-page 171
bit 0
bit 0