W83C43 Datasheet, PDF (13/21 Pages) Winbond – KEYBOARD CONTROLLER

W83C43
AC Timing, continued
NO.
DESCRIPTION
T10 RDB to Drive Data Delay
T11 RDB to Floating Data Delay
T12 Data Valid After Clock Falling (SEND)
T13 K/B Clock Period
T14 K/B Clock Pulse Width
T15 Data Valid Before Clock Falling (RECEIVE)
T16 K/B ACK After Finish Receiving
T17 RC Fast Reset Pulse Delay (8 MHz)
T18 RC Pulse Width (8 MHz)
T19 Transmit Timeout
T20 Data Valid Hold Time
T21 X1/X2 Period (6−12 MHz)
T22 Duration of CLK inactive
T23 Duration of CLK active
T24 Time from inactive CLK transition, used to time when
the auxiliary device sample DATA
T25 Time of inhibit mode
T26 Time from rising edge of CLK to DATA transition
T27 Duration of CLK inactive
T28 Duration of CLK active
T29 Time from DATA transition to falling edge of CLK
T30 Mode detect signal after P10 goes high
T31 High pulse of mode detect signal
T32 Low pulse of mode detect signal
T33 Mode detect signal after RESET goes high
T34 Time out of AT mode‘ s mode detect signal
MIN.
0
20
10
4
20
2
6
0
83
30
30
5
MAX.
40
20
4
3
2
167
50
50
25
100
300
5
T28-5
30
50
30
50
5
25
Typical 1 mS
Typical 220 µS
Typical 220 µS
Typical 1 mS
Typical 64 mS
UNIT
nS
nS
µS
µS
µS
µS
µS
µS
µS
mS
µS
nS
µS
µS
µS
µS
µS
µS
µS
µS
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Publication Release Date: January 1996
Revision A2