SB16C1058_Data Sheet_EN

SB16C1058
OCTAL UART WITH 256-BYTE FIFO
JULY 2013 REV 1.04
61
10.4 AC Electrical Characteristics
Table 31: AC Electrical Characteristics
Symbol
Parameter
Min
Max
Unit
t
rd
Pulse duration, IOR# low
24
ns
t
csr
Set up time, CS# valid before IOR# low †
10
ns
t
ar
Set up time, A2~A0 valid before IOR# low †
10
ns
t
ra
Hold time, A2~A0 valid after IOR# high †
2
ns
t
rcs
Hold time, CS# valid after IOR# high †
0
ns
t
frc
Delay time, t
ar
+t
rd
+t
rc
‡
54
ns
t
rc
Delay time, IOR# high to IOR# or IOW# low
20
ns
t
wr
Pulse duration, IOW# ↓
24
ns
t
csw
Setup time, CS# valid before IOW# ↓
10
ns
t
aw
Setup time, A7~A0 valid before IOW# ↓
10
ns
t
ds
Setup time, D7~D0 valid before IOW# ↑
15
ns
t
wa
Hold time, A7~A0 valid after IOW# ↑
2
ns
t
wcs
Hold time, CS# valid after IOW# ↑
2
ns
t
dh
Hold time, D7~D0 valid after IOW# ↑
5
ns
t
fwc
Delay time, t
aw
+t
wr
+t
wc
54
ns
t
wc
Delay time, IOW# ↑ to IOW# or IOR# ↓
20
ns
t
rvd
Enable time, IOR# ↓ to D7~D0 valid
24
ns
t
hz
Disable time, IOR# to D7~D0 released
4
ns
t
irs
Delay time, INT ↓ to TXDx ↓ at start
8
24
RCLK
t
sti
Delay time, TXDx ↓ at start to INT ↑
8
8
RCLK
t
si
Delay time, IOW# high or low (WR THR) to INT ↑
16
32
RCLK
t
sxa
Delay time, TXDx ↓ at start to TXRDY# ↓
8
RCLK
t
hr
Propagation delay time, IOW#(WR THR) ↓ to INT ↓
12
ns
t
ir
Propagation delay time, IOR#(RD IIR)↑ to INT ↓
12
ns
t
wxi
Propagation delay time, IOW#(WR THR) ↓ to TXRDY# ↑
10
ns
t
sint
Delay time, stop bit to INT ↑ or stop bit to RXRDY# or read RBR to set interrupt
1
RCLK
t
rint
Propagation delay time, Read RBR/LSR to INT ↓/LSR interrupt ↓
12
ns
t
rint
Propagation delay time, IOR# RCLK↓ to RXRDY# ↑
12
ns
t
mdo
Propagation delay time, IOW#(WR MCR)↑ to RTS#, DTR#↑
12
ns
t
sim
Propagation delay time, modem input CTS#, DSR#, and DCD# ↓↑ to INT ↑
12
ns
t
rim
Propagation delay time, IOR#(RD MSR) ↑ to interrupt ↓
3
ns