TL16C552 Datasheet, PDF (8/33 Pages) Texas Instruments – DUAL ASYCHRONOUS COMMUNICATIONS ELEMENT WITH FIFO

TL16C552
DUAL ASYCHRONOUS COMMUNICATIONS ELEMENT
WITH FIFO
SLLS102B – DECEMBER 1990 – REVISED MARCH 1996
receiver switching characteristics over recommended ranges of operating free-air temperature
and supply voltage (see Figures 9, 10, 11, 12 and 13)
PARAMETER
TEST CONDITIONS MIN MAX UNIT
td9 Delay time from stop to INT high
See Note 7
1
RCLK
cycle
tpd5 Propagation delay time from RCLK high to sample CLK high
100 ns
tpd6 Propagation delay time from IOR (RD RBR/RD LSR) high to reset interrupt low
CL = 100 pF
150 ns
tpd7 Propagation delay time from IOR (RD RBR) low to RXRDY high
150 ns
NOTE 7: The receiver data available indication, the overrun error indication, the trigger level interrupts and the active RXRDY indication is delayed
three RCLK cycles in the FIFO mode (FCR0 = 1). After the first byte has been received, status indicators (PE, FE, BI) is delayed three
RCLK cycles. These indicators are updated immediately for any further bytes received after RD RBR goes active. There are eight RCLK
cycle delays for trigger change level interrupts.
modem control switching characteristics over recommended ranges of operating free-air
temperature and supply voltage (see Figure 14)
tpd8
tpd9
tpd10
tpd11
PARAMETER
Propagation delay time from IOW (WR MCR) high to RTS (DTR) low/high
Propagation delay time from modem input (CTS, DSR) low/high to interrupt high
Propagation delay time from IOR (RD MSR) high to interrupt low
Propagation delay time from RI high to interrupt high
TEST CONDITIONS
CL = 100 pF
CL = 100 pF
CL = 100 pF
CL = 100 pF
MIN MAX UNIT
100 ns
170 ns
140 ns
170 ns
parallel port timing requirements over recommended ranges of supply voltage and operating
free-air temperature (see Figure 15)
tsu7
Setup time, data valid before STB low
th6
Hold time, data valid after STB high
tw6
Pulse duration, STB low
td10
Delay time, BUSY high to ACK low
td11
Delay time, BUSY low to ACK low
tw6
Pulse duration, ACK low
tw7
Pulse duration, BUSY high
td12
Delay time, BUSY high after STB high
MIN MAX
1
1
1
500
Defined by printer
Defined by printer
Defined by printer
Defined by printer
Defined by printer
UNIT
µs
µs
µs
8
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