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PC87306 Datasheet(PDF) 98 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87306
Description  PC87306 SuperI/OTM Enhanced Sidewinder Lite Floppy Disk Controller, Keyboard Controller, Real-Time Clock, Dual UARTs, Infrared Interface, IEEE 1284 Pa
PDF  110 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87306 Datasheet(HTML) 98 Page - National Semiconductor (TI)

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120 Electrical Characteristics (Continued)
1226 Receiver Timing
Symbol
Parameter
Conditions
Min
Max
Units
tIRRXW
IRRX Pulse Width
16 ms
616
BAUD OUT Cycles
tRAI
Delay from Active Edge of RD to Reset IRQ
78
ns
tRINT
Delay from Inactive Edge of RD (RD LSR) to Reset IRQ
55
ns
tSCD
Delay from RCLK to Sample Time
(Note 1)
41
ns
tSINT
Delay from Stop Bit to Set Interrupt
2
Baud Out
Cycles
Note 1
This is an internal timing specification and is therefore not tested
TLC12379 – 75
FIGURE 12-7 Receiver Timing
TLC12379 – 76
Note 1
If SCR0 e 1 then tSINT e 3 RCLKs For a Timeout Interrupt tSINT e 8 RCLKs
FIGURE 12-8 FIFO Mode Receiver Timing
98



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