IA8044/IA8344
Data Sheet
SDLC Communications Controller
March 30, 2010
1.
Introduction
The Innovasic Semiconductor IA8044 and IA8344 are ―plug-and-play‖ drop-in replacements and
are form, fit, and function compatible parts to the Intel 8044 and 8344 (see Chapter 4,
Innovasic/Intel Part Number Cross-Reference Tables). These devices are produced using
Innovasic’s Managed IC Lifetime Extension System (MILES™). This cloning technology, which
produces replacement ICs beyond simple emulations, ensures complete compatibility with the
original device, including any ―undocumented features.‖ Additionally, the MILES™ process
captures the clone design in such a way that production of the clone can continue even as silicon
technology advances. The IA8044 and IA8344 replace the obsolete Intel 8044 and 8344, allowing
users to retain existing board designs, software compilers/assemblers, and emulation tools—thus
avoiding expensive redesign efforts.
The IA8044 and IA8344 are Fast Single-Chip 8-Bit Microcontrollers with an integrated
SDLC/HDLC serial interface controller. They are fully functional 8-Bit Embedded Controllers
that execute all ASM51 instructions and have the same instruction set as the Intel 80C51. The
IA8044 and IA8344 can access the instructions from two types of program memory, serve
software and hardware interrupts, and provide interface for serial communications and a timer
system. The IA8044 and IA8344 are fully compatible with the Intel 8X44 series.
This data sheet documents all necessary engineering information about the IA8044 and IA8344
including functional and I/O descriptions, electrical characteristics, and applicable timing.
1.1
Features
Form, fit, and function compatible with the Intel 8044 and 8344
Packaging options available in both leaded and RoHS versions:
– 40-Pin Plastic Dual In-Line Package (PDIP) (see IA8044 40-Lead PDIP Package
Diagram)
– 44-Pin Plastic Leaded Chip Carrier (PLCC) (see IA8344 44-Pin PLCC Package
Diagram)
8-bit control unit (see Functional Block Diagram)
8-bit arithmetic-logic unit with 16-bit multiplication and division
12-MHz clock
Four 8-bit input/output ports
Two 16-bit timer/counters
Serial interface unit with SDLC/HDLC compatibility
2.4-Mbps maximum serial data rate
Two-level priority interrupt system
5 interrupt sources
Internal clock prescaler and phase generator
192 bytes of read/write data memory space
64-Kbyte external program memory space
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