XR16L788IQ-F Exar Corporation, XR16L788IQ-F Datasheet - Page 23

• Manufacturer Part Number: XR16L788IQ-F
• Description: IC UART 64B 3.3V OCTAL 100QFP
• Manufacturer: Exar Corporation
• Type: IrDA or RS- 485r

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

REV. 1.2.3
A 16-bit down-count timer for general purpose timer or counter. Its clock source may be selected from internal
crystal oscillator or externally on pin TMRCK. The timer can be set to be a single-shot for a one-time event or
re-triggerable for a periodic event. An
interrupt may be generated in the INT Register when the timer times out. It is controlled through 4 configuration
registers [TIMERCNTL, TIMER, TIMELSB, TIMERMSB]. These registers provide start/stop and re-triggerable
or one-shot operation. The time-out output of the Timer can be set to generate an interrupt for system or event
alarm.
3.1.2
P
RIORITY
1
2
3
4
5
6
7
x
F
IGURE
TIMERCNTL [3]
TIMERCNTL [1]
TIMERCNTL [2]
TIMERCNTL [0]
TIMERMSB and TIMERLSB
General Purpose 16-bit Timer/Counter [TIMERMSB, TIMELSB, TIMER, TIMECNTL] (
0
OSC. CLOCK
Bit
X
2
0
0
0
0
1
1
1
1
XX-XX-00-00)
15. T
Bit
TMRCK
T
1
0
0
1
1
0
0
1
1
(16-bit Value)
ABLE
IMER
Bit
0
0 None
1 RXRDY & RX Line Status (logic OR of LSR[4:1]). RXRDY INT clears by reading data in the RX
0 RXRDY Time-out: Cleared same way as RXRDY INT.
1 TXRDY, THR or TSR (auto RS485 mode) empty, clears after reading ISR register.
0 MSR, RTS/CTS or DTR/DSR delta or Xoff/Xon or special character detected. The first two
1 Reserved.
0 Reserved.
1 TIMER Time-out, shows up as a channel 0 INT. It clears after reading the TIMERCNTL register.
/C
9: UART C
FIFO until it falls below the trigger level; RX Line Status INT cleared after reading LSR register.
clears after reading MSR register; Xoff/Xon or special char. detect INT clears after reading ISR
register.
Reserved in other channels.
Timer Interrupt Enable
Start/Stop
Single/Re-triggerable
OUNTER CIRCUIT
Clock
Select
1
0
HANNEL
Timer/Counter
[7:0] I
16-Bit
NTERRUPT
I
NTERRUPT
Re-trigger
23
HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
0
1
Time-out
Single-shot
S
S
OURCE
OURCE
(
1
0
E
S
)
NCODING AND
AND
No Interrupt
Timer Interrupt, Ch-0 INT=7
C
LEARING
C
LEARING
XR16L788
DEFAULT