PIC18F46J50-I/PT Microchip Technology, PIC18F46J50-I/PT Datasheet - Page 272

• Manufacturer Part Number: PIC18F46J50-I/PT
• Description: IC PIC MCU FLASH 64KB 44-TQFP
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F46J50-I/PT

• Core Size: 8-Bit
• Program Memory Size: 64KB (32K x 16)
• Core Processor: PIC
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Type: FLASH
• Ram Size: 3.8K x 8
• Voltage - Supply (vcc/vdd): 2.15 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Controller Family/series: PIC18
• No. Of I/o's: 22
• Ram Memory Size: 3.6875KB
• Cpu Speed: 48MHz
• No. Of Timers: 2
• No. Of Pwm Channels: 2
• Package: 44TQFP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 48 MHz
• Operating Supply Voltage: 2.5|3.3 V
• Data Bus Width: 8 Bit
• Interface Type: I2C/SPI/USART/USB
• On-chip Adc: 13-chx10-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164330 - MODULE SKT FOR 44TQFP 18F45J10
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC18F46J50 FAMILY
18.3.9
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 Idle modes, a clock is provided to the peripherals.
That clock can be from the primary clock source, the
secondary clock (Timer1 oscillator) or the INTOSC
source. See Section 2.5 “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
controller 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 device 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
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.
18.3.10
A Reset disables the MSSP module and terminates the
current transfer.
DS39931C-page 272
and
OPERATION IN POWER-MANAGED
MODES
EFFECTS OF A RESET
data
to be
shifted into
the
SPI
18.3.11
Table 18-1 provides the compatibility between the
standard SPI modes and the states of the CKP and
CKE control bits.
TABLE 18-1:
There is also an SMP bit, which controls when the data
is sampled.
18.3.12
Because MSSP1 and MSSP2 are independent
modules, they can operate simultaneously at different
data rates. Setting the SSPM<3:0> bits of the
SSPxCON1 register determines the rate for the
corresponding module.
An exception is when both modules use Timer2 as a
time base in Master mode. In this instance, any
changes to the Timer2 module’s operation will affect
both MSSP modules equally. If different bit rates are
required for each module, the user should select one of
the other three time base options for one of the
modules.
Standard SPI Mode
Terminology
0, 0
0, 1
1, 0
1, 1
BUS MODE COMPATIBILITY
SPI CLOCK SPEED AND MODULE
INTERACTIONS
SPI BUS MODES
© 2009 Microchip Technology Inc.
CKP
Control Bits State
0
0
1
1
CKE
1
0
1
0