PIC18F4455-I/PT Microchip Technology, PIC18F4455-I/PT Datasheet
PIC18F4455-I/PT
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PIC18F4455-I/PT Summary of contents
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... PIC18F2455/2550/4455/4550 devices with these Device/Revision IDs: Part Number Device ID PIC18F2455 0001 0010 011 PIC18F2550 0001 0010 010 PIC18F4455 0001 0010 001 PIC18F4550 0001 0010 000 The Device IDs (DEVID1 and DEVID2) are located at addresses 3FFFFEh:3FFFFFh in configuration space. They are shown in binary in the format “ ...
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... Example 1 can be used. This example overwrites the Fast Return register by making a dummy call to Foo with the fast option in the high priority service routine. Date Codes that pertain to this issue: All engineering and production devices. © 2008 Microchip Technology Inc. ...
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... LowVector (void) { _asm goto MyLowISR _endasm } #pragma code /* return to default code section */ © 2008 Microchip Technology Inc. PIC18F2455/2550/4455/4550 directive instructs the compiler to not use the RETFIE FAST instruction. If the proper high priority interrupt bit is set in the IPRx register, then the interrupt is treated as high priority in spite of the pragma interruptlow directive ...
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... Example 3. This example illustrates how it reduces the instruction cycle count from 10 cycles to 3: EXAMPLE 3: #pragma code high_vector_section=0x8 void high_vector (void) { _asm CALL high_vector_branch, 1 _endasm } void high_vector_branch (void) { _asm POP GOTO high_isr _endasm } #pragma interrupt high_isr void high_isr (void) { ... } DS80220J-page 4 © 2008 Microchip Technology Inc. ...
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... ECCPASE bit (ECCP1AS<7>) after the shutdown condition expires. Date Codes that pertain to this issue: All engineering and production devices. © 2008 Microchip Technology Inc. PIC18F2455/2550/4455/4550 7. Module: ECCP When operating either Timer1 or Timer3 as a counter with a prescale value other than 1:1 and ...
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... Required Modification: Move UCONbits.PKTDIS = 0, which is located at the end of the function, to the start of the function instead. Date Codes that pertain to this issue: All engineering and production devices. Units Conditions LSb and V - REF REF REF LSb and V REF SS DD © 2008 Microchip Technology Inc. ...
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... Idle state for clock (CK low level Work around None. Date Codes that pertain to this issue: All engineering and production devices. © 2008 Microchip Technology Inc. PIC18F2455/2550/4455/4550 14. Module: USB The Ping-Pong Buffer mode in which the ping-pong buffers are enabled for Endpoints (UCFG<PPB1:PPB0> = 11) is not supported. ...
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... Set up the timer to overflow at the end of Stop bit, then start the timer when you load the TXREG. Do not load the TXREG when timer is about to overflow. Date Codes that pertain to this issue: All engineering and production devices. © 2008 Microchip Technology Inc. ...
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... Poll the WUE bit and read RCREG after the WUE bit is automatically cleared. Date Codes that pertain to this issue: All engineering and production devices. © 2008 Microchip Technology Inc. PIC18F2455/2550/4455/4550 23. Module: Timer1 In 16-Bit Asynchronous Counter mode (with or without use of the Timer1 oscillator), the TMR1H and TMR3H buffers do not update when TMRxL is read ...
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... Date Codes that pertain to this issue: All engineering and production devices. SCK PULSE VARIATION USING TIMER2 bit bit bit AVOIDING THE INITIAL SHORT SCK PULSE ;Data received? ;(Xmit complete?) ; SSPBUF ;Save in user RAM ;W = TXDATA ;Clear Timer2 ;Xmit New data © 2008 Microchip Technology Inc. ...
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... modes. OSC Date Codes that pertain to this issue: All engineering and production devices. © 2008 Microchip Technology Inc. PIC18F2455/2550/4455/4550 31. Module: Brown-out Reset (BOR) If either the HLVD or USB modules are enabled, clearing the SBOREN bit (RCON<6>) when the soft- ware ...
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... SPI Mode). Rev G Document (07/2007) Added silicon issues 29 (EUSART) and 30 (ADC). Rev H Document (03/2008) Added silicon issue 31 (Brown-out Reset – BOR). Rev J Document (09/2008) Revised issue 24 (Reset) and added issue 32 (MSSP). DS80220J-page 12 © 2008 Microchip Technology Inc. ...
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... PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...
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... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2008 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...