PIC18LF8490-I/PT Microchip Technology, PIC18LF8490-I/PT Datasheet - Page 217

• Manufacturer Part Number: PIC18LF8490-I/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,80PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF8490-I/PT

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, LCD, POR, PWM, WDT
• Number Of I /o: 66
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TFQFP
• Processor Series: PIC18LF
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: SPI, I2C, EUSART, AUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 66
• Number Of Timers: 1 x 8
• Operating Supply Voltage: 2 V to 5.5 V
• 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, ICE2000, ICE4000, DV164136, DM163028
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

16.4
Synchronous Slave mode is entered by clearing bit,
CSRC (TXSTA1<7>). This mode differs from the
Synchronous Master mode in that the shift clock is
supplied externally at the CK1 pin (instead of being
supplied internally in Master mode). This allows the
device to transfer or receive data while in any
low-power mode.
16.4.1
The operation of the Synchronous Master and Slave
modes are identical except in the case of the Sleep
mode.
If two words are written to the TXREG1, and then the
SLEEP instruction is executed, the following will occur:
a)
b)
c)
d)
e)
TABLE 16-9:
© 2007 Microchip Technology Inc.
INTCON
PIR1
PIE1
IPR1
RCSTA1
TXREG1
TXSTA1
BAUDCON1 ABDOVF
SPBRGH1
SPBRG1
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used for synchronous slave transmission.
Name
The first word will immediately transfer to the
TSR register and transmit.
The second word will remain in the TXREG1
register.
Flag bit, TX1IF, will not be set.
When the first word has been shifted out of TSR,
the TXREG1 register will transfer the second
word to the TSR and flag bit, TX1IF, will now be
set.
If enable bit, TX1IE, is set, the interrupt will wake
the chip from Sleep. If the global interrupt is
enabled, the program will branch to the interrupt
vector.
EUSART Synchronous Slave Mode
EUSART SYNCHRONOUS SLAVE
TRANSMIT
EUSART1 Transmit Register
EUSART1 Baud Rate Generator Register High Byte
EUSART1 Baud Rate Generator Register Low Byte
GIE/GIEH PEIE/GIEL
CSRC
SPEN
Bit 7
REGISTERS ASSOCIATED WITH SYNCHRONOUS SLAVE TRANSMISSION
—
—
—
RCIDL
ADIE
ADIP
ADIF
Bit 6
RX9
TX9
TMR0IE
RC1IF
RC1IE
RC1IP
SREN
TXEN
Bit 5
—
PIC18F6390/6490/8390/8490
INT0IE
TX1IE
TX1IP
CREN
SYNC
TX1IF
SCKP
Bit 4
ADDEN
SENDB
To set up a Synchronous Slave Transmission:
1.
2.
3.
4.
5.
6.
7.
8.
BRG16
SSPIE
SSPIP
SSPIF
RBIE
Bit 3
Enable the synchronous slave serial port by
setting bits, SYNC and SPEN, and clearing bit,
CSRC.
Clear bits, CREN and SREN.
If interrupts are desired, set enable bit, TX1IE.
If 9-bit transmission is desired, set bit, TX9.
Enable the transmission by setting enable bit,
TXEN.
If 9-bit transmission is selected, the ninth bit
should be loaded in bit, TX9D.
Start transmission by loading data to the
TXREG1 register.
If using interrupts, ensure that the GIE and PEIE
bits in the INTCON register (INTCON<7:6>) are
set.
TMR0IF
CCP1IF
CCP1IE
CCP1IP
BRGH
FERR
Bit 2
—
TMR2IF
TMR2IE
TMR2IP
INT0IF
OERR
TRMT
WUE
Bit 1
TMR1IF
TMR1IE
TMR1IP
ABDEN
RX9D
TX9D
DS39629C-page 215
RBIF
Bit 0
on Page
Values
Reset
59
61
61
61
61
61
61
62
62
61