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W78E52B Datasheet(PDF) 4 Page - Winbond |
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W78E52B Datasheet(HTML) 4 Page - Winbond |
4 / 22 page Preliminary W78E52B - 4 - BLOCK DIAGRAM P3.0 ~ P3.7 P1.0 ~ P1.7 ALU Port 0 Latch Port 1 Latch Timer 1 Timer 0 Timer 2 Port 1 UART XTAL1 PSEN ALE Vss Vcc RST XTAL2 Oscillator Interrupt PSW Instruction Decoder & Sequencer Reset Block Bus & Clock Controller SFR RAM Address Power control 256 bytes RAM & SFR Stack Pointer B Addr. Reg. Incrementor PC DPTR Temp Reg. T2 T1 ACC Port 3 Latch Port 4 Latch Port 3 Port 2 Latch P4.0 ~ P4.3 Port 4 Port 0 Port 2 P2.0 ~ P2.7 P0.0 ~ P0.7 INT2 INT3 Watchdog Timer ROM FUNCTIONAL DESCRIPTION The W78E52B architecture consists of a core controller surrounded by various registers, five general purpose I/O ports, 256 bytes of RAM, three timer/counters, and a serial port. The processor supports 111 different opcodes and references both a 64K program address space and a 64K data storage space. Timers 0, 1, and 2 Timers 0, 1, and 2 each consist of two 8-bit data registers. These are called TL0 and TH0 for Timer 0, TL1 and TH1 for Timer 1, and TL2 and TH2 for Timer 2. The TCON and TMOD registers provide control functions for timers 0 and 1. The T2CON register provides control functions for Timer 2. RCAP2H and RCAP2L are used as reload/capture registers for Timer 2. |
Número de pieza similar - W78E52B |
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Descripción similar - W78E52B |
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