PIC18LF8490-I/PT Microchip Technology, PIC18LF8490-I/PT Datasheet - Page 167

• 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

15.3.8
In SPI Master mode, module clocks may be operating
at a different speed than when in Full-Power mode; in
the case of Sleep mode, all clocks are halted.
In most power-managed modes, a clock is provided to
the peripherals. That clock should be from the primary
clock source, the secondary clock (Timer1 oscillator at
32.768 kHz) or the INTOSC source. See Section 2.7
“Clock Sources and Oscillator Switching” for
additional information.
In most cases, the speed that the master clocks SPI
data is not important; however, this should be
evaluated for each system.
If MSSP interrupts are enabled, they can wake the con-
troller from Sleep mode, or one of the Idle modes, when
the master completes sending data. If an exit from
Sleep or Idle mode is not desired, MSSP interrupts
should be disabled.
If the Sleep mode is selected, all module clocks are
halted and the transmission/reception will remain in
that state until the devices wakes. After the device
returns to Run mode, the module will resume
transmitting and receiving data.
In SPI Slave mode, the SPI Transmit/Receive Shift
register operates asynchronously to the device. This
allows the device to be placed in any power-managed
mode and data to be shifted into the SPI Transmit/
Receive Shift register. When all 8 bits have been
received, the MSSP interrupt flag bit will be set and if
enabled, will wake the device.
TABLE 15-2:
© 2007 Microchip Technology Inc.
INTCON
PIR1
PIE1
IPR1
TRISC
TRISF
SSPBUF
SSPCON1
SSPSTAT
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the MSSP in SPI mode.
Name
SLEEP OPERATION
PORTC Data Direction Register
PORTF Data Direction Register
MSSP Receive Buffer/Transmit Register
GIE/GIEH PEIE/GIEL TMR0IE
WCOL
Bit 7
SMP
—
—
—
REGISTERS ASSOCIATED WITH SPI OPERATION
SSPOV
ADIE
ADIP
Bit 6
ADIF
CKE
SSPEN
RC1IE
RC1IP
RC1IF
Bit 5
D/A
PIC18F6390/6490/8390/8490
INT0IE
TX1IE
TX1IP
TX1IF
Bit 4
CKP
P
SSPM3
SSPIE
SSPIP
SSPIF
15.3.9
A Reset disables the MSSP module and terminates the
current transfer.
15.3.10
Table 15-1 shows the compatibility between the
standard SPI modes and the states of the CKP and
CKE control bits.
TABLE 15-1:
There is also an SMP bit which controls when the data
is sampled.
RBIE
Bit 3
Standard SPI Mode
S
Terminology
0, 0
0, 1
1, 0
1, 1
TMR0IF
CCP1IF
CCP1IE
CCP1IP
SSPM2
EFFECTS OF A RESET
BUS MODE COMPATIBILITY
Bit 2
R/W
SPI BUS MODES
TMR2IF
TMR2IE
TMR2IP
SSPM1
INT0IF
Bit 1
UA
CKP
Control Bits State
0
0
1
1
TMR1IF
TMR1IE
TMR1IP
SSPM0
RBIF
Bit 0
DS39629C-page 165
BF
CKE
on Page
Values
Reset
1
0
1
0
59
61
61
61
62
62
60
60
60