INNOVASIC IA6850 Asynchronous communications interface adapter (acia) Datasheet

Page 1 of 4
IA6850
Advanced Information Sheet
Asynchronous Communications Interface Adapter (ACIA)
FEATURES
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•
•
•
•
•
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
(1)
RXDATA
(2)
RXCLK
(3)
TXCLK
(24)
CTS_n
(23)
DCD_n
(22)
D0
(4)
(21)
D1
RTS_n
(5)
(20)
D2
TXDATA
(6)
(19)
D3
IRQ_n
(7)
(18)
D4
CS0
(8)
(17)
D5
CS2_n
(9)
(16)
D6
CS1
(10)
(15)
D7
RS
(11)
(14)
E
VCC
(12)
(13)
R/W_n
IA6850
24 Pin DIP
Copyright  1999, InnovASIC Inc.
Customer Specific IC Solutions
Page 2 of 4
IA6850
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
CHIP
SELECT
AND
READ/WRITE
CONTROL
TRANSMIT
DATA
REGISTER
TRANSMIT
SHIFT
REGISTER
TXDATA
E
CTS_n
TRANSMIT
CONTROL
D0
STATUS
REGISTER
D1
IRQ_n
INTERRUPT
LOGIC
D2
DCD_n
D3
D4
DATA
BUS
BUFFERS
RTS_n
D5
D6
CONTROL
REGISTER
RECEIVE
CONTROL
PARITY
CHECK
D7
RECEIVE
DATA
REGISTER
RXCLK
RECEIVE
SHIFT
REGISTER
CLOCK
GEN
Copyright  1999, InnovASIC Inc.
Customer Specific IC Solutions
RXDATA
SYNC
LOGIC
Page 3 of 4
IA6850
Advanced Information Sheet
Asynchronous Communications Interface Adapter (ACIA)
Table 1
Part Number
IA6850-PDW24C
IA6850-PDW24I
Qualification Levels
Environmental/ Qual Level
Commercial
Industrial
The following diagram depicts the innovASIC Product Identification Number.
IAXXXXX-PPPPNNNT/SP
Special Processing:
S = Space
Q = MIL-STD-883
Temperature:
C = Commercial
I = Industrial
M = Military
Number of Leads
Package Type:
Per Package Designator Table
IC Base Number
innovASIC Designator
Copyright  1999, InnovASIC Inc.
Customer Specific IC Solutions
Page 4 of 4
IA6850
Advanced Information Sheet
Asynchronous Communications Interface Adapter (ACIA)
Package Designator Table
Package Type
innovASIC
Designator
Ceramic side brazed Dual In-line
Cerdip with window
Ceramic leaded chip carrier
Cerdip without window
Ceramic leadless chip carrier
PLCC
Plastic DIP standard (300 mil)
Plastic DIP standard (600 mil)
Plastic metric quad flat pack
Plastic thin quad flat pack
Skinny Cerdip
Small outline plastic gull-wing(150 mil body)
Small outline medium plastic gull-wing (207 mil body)
Small outline narrow plastic gull wing (150 mil body)
Small outline wide plastic gull wing (300 mil body)
Skinny Plastic Dip
Shrink small outline plastic (5.3mm .208 body)
Thin shrink small outline plastic
Small outline large plastic gull wing (330 mil body)
Thin small outline plastic gull-wing (8 x 20mm) [TSOP]
CDB
CDW
CLC
CD
CLL
PLC
PD
PDW
PQF
PTQ
CDS
PSO
PSM
PSN
PSW
PDS
PS
PTS
PSL
PST
PGA
BGA
CPGA
CBGA
Contact innovASIC for other package and processing options.
Copyright  1999, InnovASIC Inc.
Customer Specific IC Solutions
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