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IIe_2523002_DMA_Hardware_Protocol.pdf
74LS244 and custom chips. Apple IIe #2: Hardware Protocol for Doing DMA 3 of 9 Apple II Technical Notes 6502 microprocessor In the Apple IIe a 6502A, a 2 MHz part is used instead of the 1 MHz 6502 used in the Apple ][+. Since the custom chips in the Apple IIe are MOS and slower than the TTL in the Apple ][+, the faster 6502A was used to guarantee better margins. For example, the 6502A sets up the address bus faster on the Apple IIe than the 6502 does in the Apple ][+. 4 of 9 Developer Technical Support November 1988 On
in „Apple ][ DMA Timing“ · Mikrocontroller und Digitale Elektronik ·
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ADC0801_05.pdf
analog voltage inputs 0 The ADC0801, ADC0802, ADC0803, ADC0804 and n Logic inputs and outputs meet both MOS and TTL / ADC0805 are CMOS 8-bit successive approximation A/D voltage level specifications A converters that use a differentialpotentiometric n Works with 2.5V (LM336) voltage reference D ladder— similar
in „Verständnisfrage zum ADC080x (VIN-MIN/DC-Offset)“ · Analoge Elektronik und Schaltungstechnik ·