Manufacture, Part Number, Description, PDF. Advanced Micro Devices, , Bit Static MOS RAM with I/O Ports and Timer. Intel Corporation, H. PH from Intel Corporation. Find the PDF Datasheet, Specifications and Distributor Information. D from Intel Corporation. Find the PDF Datasheet, Specifications and Distributor Information.
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Intel softw are products are cop yrighted by and shall rem ain the property o f Intel C orp ora tion. Exceptions include timing-critical code and code that is sensitive to the aforementioned difference in the AC flag setting or differences in undocumented CPU behavior. Input and Output data are latched.
Intel C daatsheet ora tion assumes no re ihtel ility fo r the use o f any circu itry oth er than c irc u itry em bodied in an Intel.
Subtraction and bitwise logical operations on 16 bits is done in 8-bit steps.
An Intel AH processor. It can also accept a second processor, allowing a limited form of multi-processor operation where both processors run simultaneously and independently. Designers familiar with the Intel or upgrading an This page was last edited on 16 Novemberat A NOP “no operation” instruction exists, but does not modify any of the registers or flags.
All three are masked after a normal CPU reset. Datashret is supplied in a pin DIP package. Retrieved 31 May Since the two halves of port C are independent, they may be used such that one-half is initialized as an datashdet port while the other half is initialized as an output port. The internal clock is available on an output pin, to drive peripheral devices or other CPUs in lock-step synchrony with the CPU from which the signal is output.
Use, d u p lica tio n or disclosure is sub je ct to re s tric tio n s stated in Intel ‘s softw are license, o r as defined in ASPR There are also eight one-byte call instructions RST for subroutines located at the fixed addresses 00h, 08h, 10h, In other projects Wikimedia Commons.
Retrieved from ” https: Like larger processors, it has CALL and RET instructions for multi-level procedure calls and returns which can be conditionally executed, like jumps and instructions to save and restore any bit register-pair on the machine stack. The uses approximately 6, transistors.
The two modes are selected on the basis of the value present at the D 7 bit of the control word register. All interrupts are enabled by the EI instruction and disabled by the DI instruction.
This capability matched that of the competing Z80a popular derived CPU introduced the year before. Prestigio Nobile w Abstract: These instructions are written in the form of a program which is used to perform various operations such as branching, addition, subtraction, bitwise datasgeetand bit shift operations. Input low on this line. Unlike the it does not multiplex state signals onto the data bus, but the 8-bit data bus is instead multiplexed with the lower 8-bits of the bit address bus to limit the number of pins to Previous 1 2 The screen and keyboard can be switched between them, allowing programs to be assembled on one processor large programs datasheet awhile while files are edited in the other.
Intel An Intel AH processor. Block Diagram Figure 2. The following list provides some of the key features on this processor: Trainer kits composed of a printed circuit board,and supporting hardware are offered by various datashest.
Some instructions use HL as a limited bit accumulator. Discontinued BCD oriented 4-bit Try Findchips PRO for intel pin diagram.
When inteel Intel bus. Adding the stack pointer to HL is useful for indexing variables in recursive stack frames. In this mode, the may be used to extend the system bus to a slave microprocessor or to transfer data bytes to and from a floppy disk controller.
The ports provide the latching of data andE2PROM possesses Intel ‘s 2-line control architecture to eliminate bus contention in a systemwith such simple control.
When the Intel busconfiguredfor Intel mode. Intel is com m itted to the technology o f electrically erasable PROMs and we. Figure 3 shows the timing. If from the previous operation, port A is initialized as an output port and if is not reset before using the current configuration, then there is a possibility of damage of either the input device connected or or both, since both and the device connected will be sending out data.
Once designed into such products as the DECtape II controller and the VT video terminal in the late s, the served for new production throughout the lifetime of those products. Acknowledgement and handshaking signals are provided to maintain proper data flow and synchronisation between the data transmitter and receiver.
On thethisFigure 9. Many of these support chips were also used with other processors. However, an circuit requires an 8-bit address latch, so Intel manufactured several support chips with an address latch built in. For example, if port B and upper port C have to be initialized as input ports and lower port C and port A as output ports all in mode Block Diagram21 D Figure 2. Direct copying is supported between any two 8-bit registers and between any 8-bit register and a HL-addressed memory cell, using the MOV instruction.
This mode is selected when D 7 bit of the Control Word Register is 1.