HD1-6402B-9 Intersil Corporation, HD1-6402B-9 Datasheet - Page 2

• Manufacturer Part Number: HD1-6402B-9
• Description: CMOS Universal Asynchronous Receiver Transmitter (UART)
• Manufacturer: Intersil Corporation

Functional Diagram
Control Definition
(22) TBRE †
(23) TBRL
(38) CLS1
(37) CLS2
(17) RRC
(18) DRR
(19) DR †
† THESE OUTPUTS ARE
(40) TRC
(34) CRL
(24) TRE
(16) SFD
CLS 2
(21) MR
THREE-STATE
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
CLS 1
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
TRANSMITTER
CONTROL WORD
TIMING AND
TIMING AND
RECEIVER
CONTROL
CONTROL
† OE
PI
(15)
0
0
0
0
1
1
0
0
0
0
1
1
0
0
0
0
1
1
0
0
0
0
1
1
EPE
X
X
X
X
X
0
0
1
1
0
0
1
1
x
0
0
1
1
x
0
0
1
1
x
STOP
LOGIC
REGISTER
STOP
CONTROL
† FE
(14)
SBS
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
PARITY
LOGIC
PARITY
LOGIC
HD-6402
† PE
(13)
BUFFERS
3-STATE
2
START BIT
TBR8
† RBR8
MULTIPLEXER
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MULTIPLEXER
(5) (6) (7)
(33)
RECEIVER BUFFER REGISTER
TRANSMITTER BUFFER REGISTER
TRANSMITTER REGISTER
(32)
RECEIVER REGISTER
(31)
DATA BITS
(30)
(8) (9) (10) (11) (12)
CHARACTER FORMAT
5
5
5
5
5
5
6
6
6
6
6
6
7
7
7
7
7
7
8
8
8
8
8
8
(29)
(28)
(27)
(26)
PARITY BIT
† RBR1
TBR1
NONE
NONE
NONE
NONE
NONE
NONE
NONE
NONE
EVEN
EVEN
EVEN
EVEN
EVEN
EVEN
EVEN
EVEN
ODD
ODD
ODD
ODD
ODD
ODD
ODD
ODD
START
START
LOGIC
STOP BITS
1.5
1.5
1.5
(25) TRO
(36) SBS
(16) SFD
(39) EPE
(35) PI
(20) RRI
(4) RRD
1
1
1
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2