PIC18F4458T-I/PT Microchip Technology, PIC18F4458T-I/PT Datasheet - Page 2

• Manufacturer Part Number: PIC18F4458T-I/PT
• Description: 24KB Flash, 2KB RAM, 256 Bytes EEPROM, 35 I/O, USB, 12bit ADC 44 TQFP 10x10x1mm
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4458T-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 24KB (12K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 13x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM163025 - PIC DEM FULL SPEED USB DEMO BRD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2458/2553/4458/4553
2. Module: MSSP
3. Module: ECCP (PWM Mode)
DS80387A-page 2
With MSSP in SPI Master mode, F
Timer2/2 clock rate and CKE = 0, a write collision
may occur if SSPBUF is loaded immediately after
the transfer is complete. A delay may be required
after the MSSP Interrupt Flag bit, SSPIF, is set or
the Buffer Full bit, BF, is set and before writing
SSPBUF. If the delay is insufficiently short, a write
collision may occur as indicated by the WCOL bit
being set.
Work around
Add a software delay of one SCK period after
detecting the completed transfer and prior to
updating the SSPBUF contents. Verify the WCOL
bit is clear after writing SSPBUF. If the WCOL is
set, clear the bit in software and rewrite the
SSPBUF register.
Date Codes that pertain to this issue:
All engineering and production devices.
When configured for half-bridge operation with
dead band (CCPxCON<7:6> = 10), the PWM
output may be corrupted for certain values of the
PWM duty cycle. This can occur when these
additional criteria are also met:
• A non-zero dead-band delay is specified
• The duty cycle has a value of 0 through 3, or
Work around
None.
Date Codes that pertain to this issue:
All engineering and production devices.
(PDC6:PDC0 > 0)
4n + 3 (n ≥ 1)
OSC
/64 or
4. Module: Electrical Characteristics (BOR)
Certain operating conditions can move the effec-
tive Brown-out Reset (BOR) threshold outside of
the range specified in the electrical characteristics
of the device data sheet (parameter D005).
The BOR threshold has been observed to increase
with some table read operations. BOR has been
observed with 7 percent higher V
value specified for a given BORV<1:0> setting.
Work around
None.
Date Codes that pertain to this issue:
All engineering and production devices.
© 2008 Microchip Technology Inc.
DD
than the V
BOR