IA8044/IA8344
SDLC COMMUNICATIONS CONTROLLER
Data Sheet
Package Pinout
P1.0
P1.1
(1)
VCC
(40)
(39)
(38)
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(28)
(27)
(26)
(25)
IA8X44
(2)
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
40 Pin DIP
P1.2
(3)
P1.3
(4)
P1.4
(5)
P1.5
P1.6
(7)
P0.4
P0.5
P0.6
P0.7
EA
(39)
(38)
P1.5
(6)
(8)
(RTS) P1.6
(7)
P1.7
(9)
(37)
(36)
IA8X44
(8)
(CTS) P1.7
RST
P0.6 (AD6)
P0.7 (AD7)
RST/VPD
P3.0
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(9)
44 Pin LCC
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(RXD) P3.0
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
EA
N.C.
ALE
N.C.
(TXD) P3.1
(INT0) P3.2
(INT1) P3.3
(T0) P3.4
ALE
P3.1
PSEN
P3.2
PSEN
P2.7
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
P2.4 (A12)
P2.3 (A11)
P2.2 (A10)
P2.1 (A9)
P2.0 (A8)
P3.3
P3.4
P2.6
P2.5
(SCLK/T1) P3.5
(WR) P3.6
(RD) P3.7
XTAL2
P3.5
(24)
(23)
(22)
XTAL1
(21)
VSS
DESCRIPTION
The IA8044/IA8344 is a form, fit and function compatible part to the IntelÒ 8X44 SDLC
communications controller. The IA8044/IA8344 is a Fast Single-Chip 8-Bit Microcontroller with an
integrated SDLC/HDLC serial interface controller. The IA8044/IA8344 is a fully functional 8-Bit
Embedded Controller that executes all ASM51 instructions and has the same instruction set as the
Intel 80C51. The IA8044/IA8344 can access the instructions from two types of program memory,
serves software and hardware interrupts, provides an interface for serial communications and a timer
system. The IA8044/IA8344 is fully compatible with the IntelÒ 8X44 series. The functional block
diagram is shown below.
Copyright 2003
innovASIC
ENG210010112-00
www.innovasic.com
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