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The instructions LD A,R and LD A,I affect the Z80 flags register, unlike all the other LD (load) instructions. The Sign (bit 7) and Zero (bit 6) flags are set according to the data loaded from the Refresh or Interrupt source registers. For both instructions, the Parity/Overflow flag (bit 2) is set according to the current state of the IFF2 flip ...
Single 2.8 V to 5.5 V power supply; Static to 8 MHz clock operation, as well as 32.768KHz capability; W65C816S compatible CPU; 16 MB linear address space; Twenty-nine priority encoded interrupts; Four UARTS's; Time of Day (ToD) clock features; 8 x 16 bit timer/counters; Bus Control Register; Many bus operating features and modes; 8 Programmable ...
Each port has input data latching capability. Two programmable data direction registers (A and B) allow selection of data direction (input or output) on an individual I/O line basis. Also provided are two programmable 16-bit interval timer/counters with latches. Timer 1 may be operated in a one-shot or free-run mode.
The Signetics 2650 was an 8-bit microprocessor introduced in July 1975. [1] According to Adam Osborne's book An Introduction to Microprocessors Vol 2: Some Real Products, it was "the most minicomputer-like" of the microprocessors available at the time.
On-chip switched-mode power supply and programmable low-dropout regulator (LDO) to generate core voltage; Two on-chip PLLs to generate 48 MHz USB and 150MHz core clocks; RP2350A has 30 GPIO pins, of which four can optionally be used as analog inputs, RP2350B has 48 GPIO pins where eight can be used as analog inputs.
The RL78 family is an accumulator-based register-bank CISC instruction set architecture (ISA). [2] Although it has eight 8-bit registers or four 16-bit register pairs, essentially all arithmetic operations are performed on a single accumulator (the A register or AX register pair).
A PLC is an industrial microprocessor-based controller with programmable memory used to store program instructions and various functions. [21] It consists of: A processor unit (CPU) which interprets inputs, executes the control program stored in memory and sends output signals, A power supply unit which converts AC voltage to DC,
The + 5 V power supply 21: HLDA Output: Direct memory access confirmation. The processor switches data and address pins into the high impedance state, allowing another device to manipulate the bus 22: φ1 Input: The first phase of the clock generator signal 23: READY Input: Wait. With this signal it is possible to suspend the processor's work.