Philips Semiconductors
SC16C554/554D
Quad UART with 16-byte FIFO and infrared (IrDA) encoder/decoder
Product data Rev. 05 — 10 May 2004 37 of 55
9397 750 13132
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
10. Dynamic characteristics
Table 27: AC electrical characteristics
T
amb
=
−
40
°
C to +85
°
C; V
CC
= 2.5 V, 3.3 V or 5.0 V
±
10%, unless otherwise specified.
Symbol Parameter Conditions 2.5 V 3.3 V 5.0 V Unit
Min Max Min Max Min Max
t
1w
, t
2w
clock pulse duration 10 - 6 - 6 - ns
t
3w
oscillator/clock frequency
[1]
- 48 - 80 80 MHz
t
6s
address set-up time 0 - 0 - 0 - ns
t
6h
address hold time 0 - 0 - 0 - ns
t
7d
IOR delay from chip select 10 - 10 - 10 - ns
t
7w
IOR strobe width 25 pF load 77 - 26 - 23 - ns
t
7h
chip select hold time from IOR 0 - 0 - 0 - ns
t
9d
read cycle delay 25 pF load 20 - 20 - 20 - ns
t
12d
delay from IOR to data 25 pF load - 77 - 26 - 23 ns
t
12h
data disable time 25 pF load - 15 - 15 - 15 ns
t
13d
IOW delay from chip select 10 - 10 - 10 - ns
t
13w
IOW strobe width
[2]
20 - 20 - 15 - ns
t
13h
chip select hold time from IOW 0-0-0-ns
t
15d
write cycle delay
[3]
25 - 25 - 20 - ns
t
16s
data set-up time 20 - 20 - 15 - ns
t
16h
data hold time 15 - 5 - 5 - ns
t
17d
delay from IOW to output 25 pF load - 100 - 33 - 29 ns
t
18d
delay to set interrupt from Modem
input
25 pF load - 100 - 24 - 23 ns
t
19d
delay to reset interrupt from IOR 25 pF load - 100 - 24 - 23 ns
t
20d
delay from stop to set interrupt - 1 - 1 - 1 R
clk
t
21d
delay from IOR to reset interrupt 25 pF load - 100 - 29 - 28 ns
t
22d
delay from start to set interrupt - 100 - 45 - 40 ns
t
23d
delay from IOW to transmit start 8 24 8 24 8 24 R
clk
t
24d
delay from IOW to reset interrupt - 100 - 45 - 40 ns
t
25d
delay from stop to set RXRDY -1-1-1R
clk
t
26d
delay from IOR to reset RXRDY - 100 - 45 - 40 ns
t
27d
delay from IOW to set TXRDY - 100 - 45 - 40 ns
t
28d
delay from start to reset TXRDY -8-8-8R
clk
t
30s
address set-up time 10 - 10 - 10 - ns
t
30w
chip select strobe width 25 pF load
[1]
90 - 26 - 23 - ns
t
30h
address hold time 15 - 15 - 15 - ns
t
30d
read cycle delay 25 pF load 20 - 20 - 20 - ns
t
31d
delay from CS to data 25 pF load - 90 - 26 - 23 ns
t
31h
data disable time 25 pF load - 15 - 15 - 15 ns
t
32s
write strobe set-up time 10 - 10 - 10 - ns
t
32h
write strobe hold time 10 - 10 - 10 - ns
