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ST16C2552IJ44-F

Description
Serial I/O Controller, 2 Channel(s), 0.5MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size384KB,34 Pages
ManufacturerExar
Environmental Compliance
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ST16C2552IJ44-F Overview

Serial I/O Controller, 2 Channel(s), 0.5MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44

ST16C2552IJ44-F Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
Parts packaging codeLCC
package instructionQCCJ, LDCC44,.7SQ
Contacts44
Reach Compliance Codecompli
ECCN code5A991
Address bus width3
boundary scanNO
maximum clock frequency64 MHz
letter of agreementASYNC, BIT
Data encoding/decoding methodsNRZ
Maximum data transfer rate0.5 MBps
External data bus width8
JESD-30 codeS-PQCC-J44
JESD-609 codee3
length16.585 mm
low power modeYES
Number of serial I/Os2
Number of terminals44
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeQCCJ
Encapsulate equivalent codeLDCC44,.7SQ
Package shapeSQUARE
Package formCHIP CARRIER
Peak Reflow Temperature (Celsius)260
power supply5 V
Certification statusNot Qualified
Maximum seat height4.57 mm
Maximum supply voltage5.5 V
Minimum supply voltage2.97 V
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formJ BEND
Terminal pitch1.27 mm
Terminal locationQUAD
Maximum time at peak reflow temperature40
width16.585 mm
uPs/uCs/peripheral integrated circuit typeSERIAL IO/COMMUNICATION CONTROLLER, SERIAL
Base Number Matches1
ST16C2552
2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO
SEPTEMBER 2010
REV. 4.2.2
GENERAL DESCRIPTION
The ST16C2552 (2552) is a dual universal
asynchronous receiver and transmitter (UART). The
ST16C2552 is an improved version of the PC16552
UART. The 2552 provides enhanced UART functions
with 16 byte FIFOs, a modem control interface, and
data rates up to 4 Mbps. Onboard status registers
provide the user with error indications and
operational status. System interrupts and modem
control features may be tailored by external software
to meet specific user requirements. Indepedendent
programmable baud rate generators are privded to
select transmit and receive clock rates from 50 Bps to
4 Mbps. The baud rate generator can be configured
for either crystal or external clock input. An internal
loop-back capability allows onboard diagnostics. The
2552 provides block mode data transfers (DMA)
through FIFO controls. DMA transfer monitoring is
provided through the signals TXRDY# and RXRDY#.
An Alternate Function Register provides the user with
the ability to initialize both UARTs concurrently. The
2552 is available in the 44-PLCC package.
APPLICATIONS
FEATURES
Added feature in devices with top marking "A2
YYWW" and newer:
5 Volt Tolerant Inputs
Pin-to-pin and functionally compatible to National
PC16552 and Exar’s XR16L2752 and XR16C2852
4 Mbps transmit/receive operation (64 MHz
External Clock Frequency)
2 Independent UART Channels
Register Set Compatible to 16C550
16 byte Transmit FIFO to reduce the bandwidth
requirement of the external CPU
16 byte Receive FIFO with error tags to reduce
the bandwidth requirement of the external CPU
4 selectable RX FIFO Trigger Levels
Fixed Transmit FIFO interrupt trigger level
Full Modem Interface (CTS#, RTS#, DSR#,
DTR#, RI#, CD#)
DMA operation and DMA monitoring via TXRDY#
and RXRDY# pins
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
F
IGURE
1. ST16C2552 B
LOCK
D
IAGRAM
UART internal register sections A & B may be
written to concurrently
Multi-Function
output allows
functions with few I/O pins
even, odd, or no parity
more
package
Programmable character lengths (5, 6, 7, 8) with
Crystal oscillator or external clock input
A2:A0
D7:D0
IOR#
IOW#
CS#
CHSEL
INTA
INTB
TXRDYA#
TXRDYB#
MFA#
(OP2A#,
BAUDOUTA#, or
RXRDYA#)
3.3V or 5V VCC
GND
UART Channel A
UART
Regs
BRG
8-bit Data
Bus
Interface
16 Byte TX FIFO
TX & RX
16 Byte RX FIFO
RXA (or RXIRA)
TXB (or TXIRB)
RXB (or RXIRB)
Crystal Osc/Buffer
Modem Control Logic
XTAL1
XTAL2
CTS#A/B, RI#A/B,
CD#A/B, DSR#A/B
DTR#A/B, RTS#A/B
2552BLK
TXA (or TXIRA)
UART Channel B
(same as Channel A)
MFB#
(OP2B#,
BAUDOUTB#, or
RXRDYB#)
Reset
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
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