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SLLS397A − NOVEMBER 1999 − REVISED JUNE 2004
D
D
D
D
D
D
D
ST16C654 Pin Compatible With Additional
Enhancements
D
Characterized for Operation From −40°C to
85°C
Software Selectable Baud Rate Generator
Supports Up To 24-MHz Crystal Input Clock
( 1.5 Mbps)
D
D
Prescalable Provides Additional Divide by 4
Function
Supports Up To 48-MHz Oscillator Input
Clock ( 3 Mbps) for 5-V Operation
D
Fast Access 2 Clock Cycle IOR/IOW Pulse
Width
Supports Up To 32-MHz Oscillator Input
Clock ( 2 Mbps) for 3.3-V Operation
D
Programmable Sleep Mode
64-Byte Transmit FIFO
D
Programmable Serial Interface
Characteristics
− 5, 6, 7, or 8-Bit Characters
− Even, Odd, or No Parity Bit Generation
and Detection
64-Byte Receive FIFO With Error Flags
Programmable and Selectable Transmit and
Receive FIFO Trigger Levels for DMA and
Interrupt Generation
− 1, 1.5, or 2 Stop Bit Generation
D
D
Programmable Receive FIFO Trigger Levels
for Software/Hardware Flow Control
D
D
D
D
D
D
False Start Bit Detection
Complete Status Reporting Capabilities in
Both Normal and Sleep Mode
Software/Hardware Flow Control
− Programmable Xon/Xoff Characters
− Programmable Auto-RTS and Auto-CTS
Line Break Generation and Detection
Internal Test and Loopback Capabilities
Fully Prioritized Interrupt System Controls
D
D
D
Optional Data Flow Resume by Xon Any
Character
DMA Signalling Capability for Both
Received and Transmitted Data
Modem Control Functions (CTS, RTS, DSR,
DTR, RI, and CD)
Supports 3.3-V or 5-V Supply
PN PACKAGE
(TOP VIEW)
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
60
1
NC
NC
DSRA
CTSA
DTRA
NC
2
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
DSRD
CTSD
DTRD
GND
RTSD
INTD
CSD
TXD
IOR
TXC
CSC
INTC
RTSC
3
4
5
6
V
CC
7
RTSA
INTA
CSA
8
9
10
11
12
13
14
15
16
17
18
19
20
TXA
IOW
TXB
CSB
INTB
RTSB
GND
DTRB
CTSB
DSRB
NC
TL16C754BPN
V
CC
DTRC
CTSC
DSRC
NC
NC
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
NC − No internal connection
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright 1999 − 2004, Texas Instruments Incorporated
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