PIC18LF8490-I/PT Microchip Technology, PIC18LF8490-I/PT Datasheet - Page 5

• 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

11. Module: EUSART
12. Module: AUSART
13. Module: Timer1/Timer3
© 2007 Microchip Technology Inc.
When performing back-to-back transmission in 9-bit
mode (TX9D bit in the TXSTAx register is set), the
second byte may be corrupted if it is written into
TXREGx immediately after the TMRT bit is set.
Work around
Execute a software delay, at least one-half the
transmission’s bit time, after TMRT is set and prior
to writing subsequent bytes into TXREGx.
Date Codes that pertain to this issue:
All engineering and production devices.
The AUSART for PIC18F6390/6490/8390/8490
devices may not recognize a received Stop bit if
the combined error rate is too high.
Work around
1. Increase the baud rate of the device by
2. Configure the transmitter to send two Stop bits.
Date Codes that pertain to this issue:
All engineering and production devices.
When Timer1 or Timer3 is configured for external
clock source and the CCPxCON register is
configured with 0x0B (Compare mode, trigger
special event), the timer is not reset on a Special
Event Trigger.
Work around
Modify firmware to reset the Timer1/Timer3
registers upon detection of the compare match
condition — TMRxL and TMRxH.
Date Codes that pertain to this issue:
All engineering and production devices.
decrementing the SPBRGHx:SPBRGx register
pair value by one. Verify that the new baud rate
does not exceed the maximum combined error
rate of the application.
PIC18F6390/6490/8390/8490
14. Module: Timer1/Timer3
15. Module: Timer1/Timer3
When Timer1 or Timer3 is in External Clock
Synchronized mode and the external clock period
is between 1 and 2 T
be skipped.
Work around
Avoid using an external clock with a period (1/
frequency) between 1 and 2 T
Date Codes that pertain to this issue:
All engineering and production devices.
When Timer1/Timer3 is operating in 16-bit mode
and the prescale setting is not 1:1, a write to the
TMR1H/TMR3H Buffer registers may lengthen the
duration of the period between the increments of
the timer for the period in which TMR1H/TMR3H
was written.
Work around
Two work arounds are available: 1) Stop Timer1/
Timer3
registers; 2) Write TMR1L/TMR3L immediately
after writing TMR1H/TMR3H.
Date Codes that pertain to this issue:
All engineering and production devices.
before
writing
CY
, interrupts will occasionally
the
CY
.
DS80207F-page 5
TMR1H/TMR3H