IA8044/IA8344
SDLC COMMUNICATIONS CONTROLLER
Preliminary Data Sheet
As of Production Version 00
Package Pinout
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
(RTS) P1.6
(CTS) P1.7
RST
(RXD) P3.0
(TXD) P3.1
(INT0) P3.2
(INT1) P3.3
(T0) P3.4
(SCLK/T1) P3.5
P1.4
P1.3
P0.1
P0.2
(41)
VCC
P1.0
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
40 Pin DIP
(39)
(38)
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(28)
(27)
(26)
(25)
(24)
(23)
(22)
(21)
P0.0 (AD0)
P0.1 (AD1)
(44)
(43)
(42)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA
ALE
PSEN
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
P2.4 (A12)
P2.3 (A11)
P2.2 (A10)
P1.5
P1.6
P1.7
RST/VPD
P3.0
N.C.
P3.1
P3.2
P3.3
P3.4
P3.5
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
(28)
(40)
(6)
(5)
(4)
(3)
(2)
(1)
P0.2 (AD2)
P0.0
N.C.
P0.3
P1.2
P1.1
(1)
IA8X44
(40)
VCC
(39)
(38)
P0.4
P0.5
P0.6
P0.7
EA
N.C.
ALE
PSEN
P2.7
P2.6
P2.5
IA8X44
44 Pin LCC
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(WR) P3.6
(RD) P3.7
XTAL2
XTAL1
VSS
VSS
P2.0
P2.3
XTAL2
XTAL1
P3.6
P3.7
P2.1
P2.1 (A9)
P2.0 (A8)
DESCRIPTION
The IA8044/IA8344 is a form, fit and function compatible part to the Intel® 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 Intel® 8X44 series. The
functional block diagram is shown below.
Copyright
©
2001
ENG210010112-00
P2.2
P2.4
N.C.
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