ST16C2552IJ44-F Exar Corporation, ST16C2552IJ44-F Datasheet - Page 10

• Manufacturer Part Number: ST16C2552IJ44-F
• Description: IC UART FIFO 16B DUAL 44PLCC
• Manufacturer: Exar Corporation
• Type: RS- 232 or RS- 485r

Specifications of ST16C2552IJ44-F

• Number Of Channels: 2, DUART
• Package / Case: 44-LCC (J-Lead)
• Features: *
• Fifo's: 16 Byte
• Protocol: RS232, RS485
• Voltage - Supply: 3.3 V ~ 5 V
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Data Rate: 4 Mbps
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.97 V
• Supply Current: 3 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V or 5 V
• No. Of Channels: 2
• Supply Voltage Range: 2.97V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: PLCC
• No. Of Pins: 44
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 1016-1258-5

ST16C2552
2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO
A single baud rate generator is provided for the transmitter and receiver, allowing independent TX/RX channel
control. The programmable Baud Rate Generator is capable of operating with a crystal frequency of up to 24
MHz. However, with an external clock input on XTAL1 pin and a 2K ohms pull-up resistor on XTAL2 pin (as
shown in
5.0V.
F
To obtain maximum data rate, it is necessary to use full rail swing on the clock input. See external clock
operating frequency over power supply voltage chart in
F
OPERATING SPEED
The 2552 divides the basic external clock by 16. The basic 16X clock provides table rates to support standard
and custom applications using the same system design. The Baud Rate Generator divides this 16X clock by
any divisor from 1 to 2
Customized Baud Rates can be achieved by selecting the proper divisor values for the MSB and LSB sections
of baud rate generator.
2.9
IGURE
IGURE
6. O
5. E
Programmable Baud Rate Generator
Figure
XTERNAL
PERATING
5) it can extend its operation up to 64 MHz (4Mbps serial data rate) at room temperature and
.
C
F
LOCK
REQUENCY
16
-1. The rate table is configured via the DLL and DLM internal register functions.
C
ONNECTION FOR
C
HART
80
70
60
50
40
30
Operating frequency for ST16C2550
with external clock and a 2K ohms
vcc
gnd
pull-up resistor on XTAL2 pin.
. R
External Clock
EQUIRES A
3.0
E
XTENDED
3.5 4.0
R1
2K
Suppy Voltage
VCC
10
2K
Figure
D
OHMS PULL
XTAL1
XTAL2
ATA
4.5
6.
R
5.0
ATE
5.5
-
UP RESISTOR ON
-40
25
85
o
o
o
C
C
C
XTAL2
PIN TO INCREASE
REV. 4.2.2