Rainbow-electronics W78C58 Manual de usuario Pagina 1

W78C588-BIT MICROCONTROLLERPublication Release Date: December 1997 - 1 - Revision A5GENERAL DESCRIPTIONThe W78C58 is a derivative of the W78C52 mic

W78C58- 10 -Following tables show the interrupt informations and priority definitions.Eight-source interrupt informations:INTERRUPTSOURCEVECTORADDRESS

W78C58Publication Release Date: December 1997- 11 - Revision A5***TCON - Timer 0, 1 Control (88H)TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0TF1: Timer 1 overflow

W78C58- 12 -*Reduced EMI ModeThe AO bit in the AUXR register, when set, disables the ALE output.***AUXR - Auxiliary Register (8EH)-------AOAO: Turn of

W78C58Publication Release Date: December 1997- 13 - Revision A5DC Characteristics, continuedPARAMETER SYM. SPECIFICATION UNIT TEST CONDITIONSMIN. MAX

W78C58- 14 -AC CHARACTERISTICSThe AC specifications are a function of the particular process used to manufacture the part, theratings of the I/O buffe

W78C58Publication Release Date: December 1997- 15 - Revision A5Notes:1. P00-P07, P20-P27 remain stable through entire memory cycle.2. Memory access ti

W78C58- 2 -PIN CONFIGURATIONSVCC12345678910111213141516171819203940343536373830313233262728292122232425P0.0, AD0P0.1, AD1P0.2, AD2P0.3, AD3P0.4, AD4P0

W78C58Publication Release Date: December 1997- 3 - Revision A5PIN DESCRIPTIONSYMBOL TYPE DESCRIPTIONSEA I EXTERNAL ACCESS ENABLE: This pin forces the

W78C58- 4 -BLOCK DIAGRAMP3.0 ~P3.7P1.0 ~P1.7ALUPort 0LatchPort 1LatchTimer1Timer0Timer2Port1UARTXTAL1 PSENALE GNDVCCRSTXTAL2OscillatorInterruptPSW32

W78C58Publication Release Date: December 1997- 5 - Revision A5FUNCTIONAL DESCRIPTIONThe W78C58 is pin-to-pin compatible with the W78C52, except that t

W78C58- 6 -1. INT2 / INT3Two additional external interrupts, INT2 and INT3 , whose functions are similar to those of externalinterrupt 0 and 1 in the

W78C58Publication Release Date: December 1997- 7 - Revision A5DESCRIPTIONS OF THE SPECIAL FUNCTION REGISTERS (SFRS)SYMBOL DEFINITION ADDR. MSB

W78C58- 8 -W78C58 SFRs address location map:F8 FFF0 + B F7E8 EFE0 + ACC E7D8 +P4 DFD0 + PSW D7C8 +T2CON RCAP2L RCAP2H TL2 TH2 CFC0 +XICON C7B8 + IP BF

W78C58Publication Release Date: December 1997- 9 - Revision A5* Interrupts***IE - Interrupt Enable (A8H)EA - ET2 ES ET1 EX1 ET0 EX0EA: lobal interrup