w78c032c Winbond Electronics Corp America, w78c032c Datasheet
w78c032c
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w78c032c Summary of contents
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... PORT ACCESS CYCLE ............................................................................................... 13 8. TYPICAL APPLICATION CIRCUIT........................................................................................... 14 8.1 USING EXTERNAL PROGRAM MEMORY AND CRYSTAL ....................................... 14 8.2 EXPANDED EXTERNAL DATA MEMORY AND OSCILLATOR ................................. 15 9. PACKAGE DIMENSIONS ......................................................................................................... 16 9.1 40-PIN DIP.................................................................................................................... 16 9.2 44-PIN PLCC ................................................................................................................ 16 9.3 44-PIN QFP .................................................................................................................. 17 10. REVISION HISTORY ................................................................................................................ 18 W78C32C/W78C032C DATA SHEET 8-BIT MICROCONTROLLER Publication Release Date: December 4, 2006 - 1 - Revision A6 ...
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... The W78C032C microcontroller supplies a wider frequency range than most 8-bit microcontrollers on the market compatible with the industry standard 80C32 microcontroller series. The W78C032C contains four 8-bit bidirectional parallel ports, three 16-bit timer/counters, and a serial port. These peripherals are supported by a six-source, two-level interrupt capability. There are 256 bytes of RAM, and the device supports ROMless operation for application programs ...
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... PSEN P3 2 INT1, 31 P2.7, A15 P3 3 T0, P3.4 30 P2.6, A14 29 T1, P3.5 P2.5, A13 Publication Release Date: December 4, 2006 - 3 - W78C32C/W78C032C ...
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... P3.7 EA External Address Input, active low. This pin forces the processor to execute out of external ROM. This pin should be kept low for all W78C032C operations. RST Reset Input, active high. This pin resets the processor. It must be kept high for at least two machine cycles in order to be recognized by the processor. ...
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... Crystal 2. This is the crystal oscillator output the inversion of XTAL1 Power Supplies. These are the chip ground and positive supplies. W78C32C/W78C032C PSEN enables the external ROM onto the Port 0 PSEN goes to a high state during reset with a Publication Release Date: December 4, 2006 ...
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... Timers 0 and 1. 5.2 Clock The W78C032C is designed to be used with either a crystal oscillator or an external clock. Internally, the clock is divided by two before it is used. This makes the W78C032C relatively insensitive to duty cycle variations in the clock. 5.2.1 Crystal Oscillator The W78C032C incorporates a built-in crystal oscillator. To make the oscillator work, a crystal must be connected across pins XTAL1 and XTAL2 ...
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... The external RESET signal is sampled at S5P2. To take effect, it must be held high for at least two machine cycles while the oscillator is running. An internal trigger circuit in the reset line is used to deglitch the reset line when the W78C032C is used with an external RC network. The reset logic also has a special glitch removal circuit that ignores glitches on the reset line ...
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... 5. 5. 0V<V < 4. OL1 OL2 -100 μA I OH1 -400 μA I OH2 V = 4.5V IL1 W78C32C/W78C032C MIN. MAX. -0.3 +7.0 V -0 -55 +150 SPECIFICATION MIN. TYP. MAX. 4 -75 - +10 - +184 +350 - 0.45 2 ...
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... XTAL1 PARAMETER Operating Speed Clock Period Clock High Clock Low Notes: 1. The clock may be stopped indefinitely in either state. 2. The T specification is used as a reference in other specifications There are no duty cycle requirements on the XTAL1 input. W78C32C/W78C032C TEST CONDITIONS ...
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... ALE Low to RD Low RD Low to Data Valid Data Hold after RD High Data Float after RD High RD Pulse Width Notes: 1. Data memory access time " Δ " (due to buffer driving delay and wire loading nS. W78C32C/W78C032C SYMBOL MIN. TYP -Δ AAS ...
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... Port Input Setup to ALE Low Port Input Hold from ALE Low Port Output to ALE Note: Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to ALE, since it provides a convenient reference. W78C32C/W78C032C SYMBOL MIN. TYP. T ...
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... Data Read Cycle S4 S5 XTAL1 ALE PSEN PORT 2 A0-A7 PORT ALW T APL T PSW T AAS T PDA T T PDH, PDZ A0-A7 Code Data A8-A15 DATA T T DAR DDA T T DRD - 12 - W78C32C/W78C032C A0-A7 Data A0- DDH, DDZ ...
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... Timing Waveforms, continued 7.3 Data Write Cycle S4 S5 XTAL1 ALE PSEN PORT 2 PORT 0 A0- DAW 7.4 Port Access Cycle XTAL1 ALE T PDS PORT INPUT SAMPLE W78C32C/W78C032C A8-A15 DATA OUT T DAD T DWR PDH Publication Release Date: December 4, 2006 - ...
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... P1.0 2 P1.1 P1 P1.3 P1 P1.5 7 P1.6 8 P1.7 W78C32C/W78C032C CRYSTAL 16 MHz 24 MHz 33 MHz 40 MHz Above table shows the reference values for crystal applications. Note: C1, C2, R components refer to Figure A. W78C32C/W78C032C 39 AD0 AD0 P0 AD1 AD1 P0 AD2 7 AD2 D2 Q2 P0.2 ...
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... XTAL1 OSCILLATOR XTAL2 8 RST INT0 12 13 INT1 P1.0 2 P1.1 3 P1.2 4 P1.3 5 P1.4 6 P1.5 7 P1.6 8 P1.7 W78C32C/W78C032C W78C32C/W78C032C 3 P0.0 AD0 AD0 D0 AD1 P0 AD1 D1 P0 AD2 AD2 P0.3 AD3 A3 36 AD3 P0.4 AD4 A4 AD4 ...
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... 9.2 44-pin PLCC θ Seating Plane W78C32C/W78C032C Base Plane A 1 Seating Plane Dimension in inch Dimension in mm Symbol Min. Nom. Max. Nom. ...
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... Package Dimensions, continued 9.3 44-pin QFP See Detail F y Seating Plane W78C32C/W78C032C θ Detail F 1 Publication Release Date: December 4, 2006 - 17 - Dimension in inch Dimension in mm Symbol Min. Nom. Max. Min. Nom. Max. ...
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... Winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. Winbond customers using or selling these products for use in such applications their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales. W78C32C/W78C032C PAGE DESCRIPTION - Initial Issued ...