PIC18F66J11-I/PT Microchip Technology, PIC18F66J11-I/PT Datasheet - Page 226

• Manufacturer Part Number: PIC18F66J11-I/PT
• Description: IC PIC MCU FLASH 32KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F66J11-I/PT

• Core Size: 8-Bit
• Program Memory Size: 64KB (32K x 16)
• Core Processor: PIC
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 52
• Program Memory Type: FLASH
• Ram Size: 3930 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Controller Family/series: PIC18
• No. Of I/o's: 52
• Ram Memory Size: 3.837890625KB
• Cpu Speed: 48MHz
• No. Of Timers: 5
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3904 B
• Interface Type: EUSART, I2C, MSSP, SPI
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 52
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, DV164136, DM183032, DM183022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 11 Channel
• Package: 64TQFP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 48 MHz
• Operating Supply Voltage: 1.8|2.5|3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC162091 - HEADER MPLAB ICD2 18F87J11 64/80MA180020 - MODULE PLUG-IN HPC EXPL 18F87J11AC164327 - MODULE SKT FOR 64TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

PIC18F87J11 FAMILY
19.3.2
When initializing the SPI, several options need to be
specified. This is done by programming the appropriate
control bits (SSPxCON1<5:0> and SSPxSTAT<7:6>).
These control bits allow the following to be specified:
• Master mode (SCKx is the clock output)
• Slave mode (SCKx is the clock input)
• Clock Polarity (Idle state of SCKx)
• Data Input Sample Phase (middle or end of data
• Clock Edge (output data on rising/falling edge of
• Clock Rate (Master mode only)
• Slave Select mode (Slave mode only)
Each MSSP module consists of a transmit/receive shift
register (SSPxSR) and a buffer register (SSPxBUF).
The SSPxSR shifts the data in and out of the device,
MSb first. The SSPxBUF holds the data that was
written to the SSPxSR until the received data is ready.
Once the 8 bits of data have been received, that byte is
moved to the SSPxBUF register. Then, the Buffer Full
detect bit, BF (SSPxSTAT<0>) and the interrupt flag bit,
SSPxIF, are set. This double-buffering of the received
data (SSPxBUF) allows the next byte to start reception
before reading the data that was just received. Any
write to the SSPxBUF register during transmis-
sion/reception of data will be ignored and the Write
Collision Detect bit, WCOL (SSPxCON1<7>), will be
set. User software must clear the WCOL bit so that it
can be determined if the following write(s) to the
SSPxBUF register completed successfully.
EXAMPLE 19-1:
DS39778D-page 226
LOOP
output time)
SCKx)
BTFSS
BRA
MOVF
MOVWF
MOVF
MOVWF
OPERATION
SSP1STAT, BF
LOOP
SSP1BUF, W
RXDATA
TXDATA, W
SSP1BUF
LOADING THE SSP1BUF (SSP1SR) REGISTER
;Has data been received (transmit complete)?
;No
;WREG reg = contents of SSP1BUF
;Save in user RAM, if data is meaningful
;W reg = contents of TXDATA
;New data to xmit
When the application software is expecting to receive
valid data, the SSPxBUF should be read before the next
byte of data to transfer is written to the SSPxBUF. The
Buffer Full bit, BF (SSPxSTAT<0>), indicates when
SSPxBUF has been loaded with the received data
(transmission is complete). When the SSPxBUF is read,
the BF bit is cleared. This data may be irrelevant if the
SPI is only a transmitter. Generally, the MSSP interrupt
is used to determine when the transmission/reception
has completed. If the interrupt method is not going to be
used, then software polling can be done to ensure that a
write collision does not occur. Example 19-1 shows the
loading
transmission.
The SSPxSR is not directly readable or writable and
can only be accessed by addressing the SSPxBUF
register. Additionally, the SSPxSTAT register indicates
the various status conditions.
19.3.3
The drivers for the SDOx output and SCKx clock pins
can be optionally configured as open-drain outputs.
This feature allows the voltage level on the pin to be
pulled to a higher level through an external pull-up
resistor, and allows the output to communicate with
external circuits without the need for additional level
shifters. For more information, see Section 10.1.4
“Open-Drain Outputs”.
The open-drain output option is controlled by the
SPI2OD and SPI1OD bits (ODCON3<1:0>). Setting an
SPIxOD bit configures the SDOx and SCKx pins for the
corresponding module for open-drain operation.
The ODCON3 register shares the same address as the
T1CON register. The ODCON3 register is accessed by
setting the ADSHR bit in the WDTCON register
(WDTCON<4>).
of
OPEN-DRAIN OUTPUT OPTION
the
SSPxBUF
© 2009 Microchip Technology Inc.
(SSPxSR)
for
data