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IA6850 Datasheet

Asynchronous Communications Interface Adapter (ACIA)

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IA6850 pdf
IA6850
Page 1 of 4
Advanced Information Sheet
Asynchronous Communications Interface Adapter (ACIA)
FEATURES
Form, Fit, and Function Compatible with the Motorola© MC6850
Packaging option available: 24 Pin Plastic DIP
Programmable Word Length, Stop Bits, and Parity
Error Detection
Divide by 1, 16, or 64 operation
TBD Equivalent gates.
The IA6850 uses innovASIC’s innovative new f 3 Program to provide industry with parts that other
vendors have declared obsolete. By specifying parts through this program a customer is assured of
never having a component become obsolete again. This advanced information sheet assumes the
original part has been designed in, and so provides a summary of capabilities only. For new designs
contact innovASIC for more detailed information.
Motorola is a copyright trademark of Motorola, Inc.
Package Pinout
VSS
RXDATA
RXCLK
TXCLK
RTS_n
TXDATA
IRQ_n
CS0
CS2_n
CS1
RS
VCC
(1) IA6850
(2)
24 Pin DIP
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(24)
(23)
(22)
(21)
(20)
(19)
(18)
(17)
(16)
(15)
(14)
(13)
CTS_n
DCD_n
D0
D1
D2
D3
D4
D5
D6
D7
E
R/W_n
Copyright © 1999, InnovASIC Inc.
Customer Specific IC Solutions



InnovASIC
InnovASIC

IA6850 Datasheet Preview

IA6850 Datasheet

Asynchronous Communications Interface Adapter (ACIA)

No Preview Available !

IA6850 pdf
IA6850
Page 2 of 4
Advanced Information Sheet
Asynchronous Communications Interface Adapter (ACIA)
The IA6850 is an ACIA megafunction used to interface a microprocessor to a serial communications
channel, and is functionally equivalent to the Motorola MC6850. This function receives and transmits
data in a variety of configurations including 7 or 8 bit data words, odd, even, or nor parity, and 1 or 2
stop bits.
A block diagram is shown in Figure 1.
Functional Block Diagram
Figure 1
TXCLK
CLOCK
GEN
PARITY
GEN
R/W_n
CS0
CS1
CS2_n
RS
E
CHIP
SELECT
AND
READ/WRITE
CONTROL
D0
D1
D2
D3
DATA
BUS
D4 BUFFERS
D5
D6
D7
TRANSMIT
DATA
REGISTER
STATUS
REGISTER
CONTROL
REGISTER
TRANSMIT
SHIFT
REGISTER
TXDATA
TRANSMIT
CONTROL
CTS_n
INTERRUPT
LOGIC
IRQ_n
DCD_n
RTS_n
RECEIVE
CONTROL
PARITY
CHECK
RXCLK
RECEIVE
DATA
REGISTER
RECEIVE
SHIFT
REGISTER
CLOCK
GEN
SYNC
LOGIC
RXDATA
Copyright © 1999, InnovASIC Inc.
Customer Specific IC Solutions


Part Number IA6850
Description Asynchronous Communications Interface Adapter (ACIA)
Maker InnovASIC
Total Page 4 Pages
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