SC68C2550BIB48,151 NXP Semiconductors, SC68C2550BIB48,151 Datasheet - Page 36

• Manufacturer Part Number: SC68C2550BIB48,151
• Description: IC UART DUAL W/FIFO 48-LQFP
• Manufacturer: NXP Semiconductors
• Type: 5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s with 16-byte FIFOsr

Specifications of SC68C2550BIB48,151

• Number Of Channels: 2, DUART
• Package / Case: 48-LQFP
• Features: False-start Bit Detection
• Fifo's: 16 Byte
• Voltage - Supply: 2.5V, 3.3V, 5V
• With Auto Flow Control: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Data Rate: 5 Mbps
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.25 V
• Supply Current: 4.5 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 2.5 V or 3.3 V or 5 V
• Transmit Fifo: 16Byte
• Receive Fifo: 16Byte
• Transmitter And Receiver Fifo Counter: Yes
• Package Type: LQFP
• Operating Supply Voltage (max): 5.5V
• Mounting: Surface Mount
• Pin Count: 48
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-3296; 935278765151; SC68C2550BIB48-S

NXP Semiconductors
17. Contents
1
2
3
4
5
5.1
5.2
6
6.1
6.2
6.3
6.4
6.5
6.6
6.7
7
7.1
7.2
7.2.1
7.2.2
7.3
7.3.1
7.3.1.1
7.3.1.2
7.3.2
7.4
7.5
7.6
7.7
7.8
7.9
7.10
8
9
10
10.1
11
12
12.1
12.2
12.3
12.4
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
Functional description . . . . . . . . . . . . . . . . . . . 7
Register descriptions . . . . . . . . . . . . . . . . . . . 13
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 22
Static characteristics. . . . . . . . . . . . . . . . . . . . 23
Dynamic characteristics . . . . . . . . . . . . . . . . . 24
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 30
Soldering of SMD packages . . . . . . . . . . . . . . 31
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
UART A-B functions . . . . . . . . . . . . . . . . . . . . . 7
Internal registers. . . . . . . . . . . . . . . . . . . . . . . . 8
FIFO operation . . . . . . . . . . . . . . . . . . . . . . . . . 8
Hardware/software and time-out interrupts. . . . 9
Programmable baud rate generator . . . . . . . . . 9
DMA operation . . . . . . . . . . . . . . . . . . . . . . . . 10
Loopback mode . . . . . . . . . . . . . . . . . . . . . . . 11
Transmit Holding Register (THR) and
Receive Holding Register (RHR) . . . . . . . . . . 13
Interrupt Enable Register (IER) . . . . . . . . . . . 14
IER versus Transmit/Receive FIFO interrupt
mode operation. . . . . . . . . . . . . . . . . . . . . . . . 15
IER versus Receive/Transmit FIFO polled
mode operation. . . . . . . . . . . . . . . . . . . . . . . . 15
FIFO Control Register (FCR) . . . . . . . . . . . . . 15
DMA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Mode 0 (FCR bit 3 = 0) . . . . . . . . . . . . . . . . . . 15
Mode 1 (FCR bit 3 = 1) . . . . . . . . . . . . . . . . . . 15
FIFO mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Interrupt Status Register (ISR) . . . . . . . . . . . . 17
Line Control Register (LCR) . . . . . . . . . . . . . . 18
Modem Control Register (MCR) . . . . . . . . . . . 19
Line Status Register (LSR) . . . . . . . . . . . . . . . 20
Modem Status Register (MSR). . . . . . . . . . . . 21
Scratchpad Register (SPR) . . . . . . . . . . . . . . 22
SC68C2550B external reset condition . . . . . . 22
Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . 25
Introduction to soldering . . . . . . . . . . . . . . . . . 31
Wave and reflow soldering . . . . . . . . . . . . . . . 31
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 31
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 32
5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs
13
14
15
15.1
15.2
15.3
15.4
16
17
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2009.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 33
Revision history . . . . . . . . . . . . . . . . . . . . . . . 34
Legal information . . . . . . . . . . . . . . . . . . . . . . 35
Contact information . . . . . . . . . . . . . . . . . . . . 35
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 35
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 35
SC68C2550B
Document identifier: SC68C2550B_3
Date of release: 9 October 2009
All rights reserved.