XR16L788IQ-F Exar Corporation, XR16L788IQ-F Datasheet - Page 8
![IC UART 64B 3.3V OCTAL 100QFP](/photos/29/6/290689/tqfp100_sml.jpg)
XR16L788IQ-F
Manufacturer Part Number
XR16L788IQ-F
Description
IC UART 64B 3.3V OCTAL 100QFP
Manufacturer
Exar Corporation
Type
IrDA or RS- 485r
Datasheet
1.XR16L788CQ-F.pdf
(54 pages)
Specifications of XR16L788IQ-F
Number Of Channels
8
Package / Case
100-BQFP
Features
*
Fifo's
64 Byte
Protocol
RS485
Voltage - Supply
2.97 V ~ 5.5 V
With Auto Flow Control
Yes
With Irda Encoder/decoder
Yes
With False Start Bit Detection
Yes
With Modem Control
Yes
Mounting Type
Surface Mount
Data Rate
6.25 Mbps
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.97 V
Supply Current
5 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
8
Uart Features
Tx/Rx FIFO Counters
Supply Voltage Range
2.97V To 5.5V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
QFP
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
1016-1284
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
XR16L788IQ-F
Manufacturer:
Exar Corporation
Quantity:
10 000
Part Number:
XR16L788IQ-F
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
XR16L788
HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
The INT# interrupt output changes according to the operating mode and enhanced features setup.
and 3
The 788 includes an on-chip oscillator (XTAL1 and XTAL2). The crystal oscillator provides the system clock to
the Baud Rate Generators (BRG) in each of the 8 UARTs, the 16-bit general purpose timer/counter and
internal logics. XTAL1 is the input to the oscillator or external clock buffer input with XTAL2 pin being the
output. For programming details, see
The on-chip oscillator is designed to use an industry standard microprocessor crystal (parallel resonant,
fundamental frequency with 10-22 pF capacitance load, ESR of 20-120 ohms and 100ppm frequency
tolerance) connected externally between the XTAL1 and XTAL2 pins (see
clock can be connected to the XTAL1 pin to clock the internal 8 baud rate generators for standard or custom
rates. Typically, the oscillator connections are shown in
see application note DAN108 on EXAR’s web site.
2.4
2.5
INT# Pin
INT# Pin
summarize the operating behavior for the transmitter and receiver.
INT# Ouput
CRYSTAL OSCILLATOR / BUFFER
INT# Pin
Auto RS485
Mode
YES
NO
HIGH = no data
LOW = 1 byte
F
IGURE
HIGH = a byte in THR
LOW = THR empty
HIGH = a byte in THR
LOW = transmitter empty
T
ABLE
T
(FIFO D
ABLE
FCR B
(FIFO D
3. T
FCR B
“Section 2.6, Programmable Baud Rate Generator” on page
2: INT# P
3: INT# P
YPICAL OSCILLATOR CONNECTIONS
IT
ISABLED
-0 = 0
22-47pF
IT
ISABLED
XTAL1
-0 = 0
C1
R=300K to 400K
IN
)
IN
)
O
14.7456
O
PERATION FOR
MHz
PERATION
8
Figure
HIGH = FIFO above trigger level
LOW = FIFO below trigger level or FIFO empty
HIGH = FIFO above trigger level
LOW = FIFO below trigger level or transmitter empty
HIGH = FIFO below trigger level
LOW = FIFO above trigger level
22-47pF
XTAL2
C2
3. For further reading on oscillator circuit please
F
OR
T
RANSMITTER
R
(FIFO E
ECEIVER
FCR B
Figure
(FIFO E
FCR B
IT
NABLED
-0 = 1
3). Alternatively, an external
IT
NABLED
)
-0 = 1
)
REV. 1.2.3
9.
Table 2