參數(shù)資料
型號(hào): W89C840F
英文描述: LAN NODE CONTROLLER
中文描述: 網(wǎng)絡(luò)節(jié)點(diǎn)控制器
文件頁(yè)數(shù): 69/72頁(yè)
文件大小: 731K
代理商: W89C840F
W89C840F
Publication Release Date:April 1997
Revision A1
- 69 -
AC Characteristics (VDD=4.75 V to 5.25V, VSS=0 V,TA = 0
°
C to 70
°
C)
Serial EEPROM Timing
SYMBOL
DESCRIPTION
MIN
.
MAX.
UNIT
T1
EECS asserted to SK
500
nS
T2
EECS hold from SK
0
500
nS
T3
MSD2 OFF time
500
600
nS
T4
MSD2 ON time
500
600
nS
T5
MSD2 clock period
1
1.2
μ
S
T6
MSD1 set up time to MSD2 high
500
600
nS
T7
MSD1 hold time from MSD2 high
500
600
nS
T8
MSD0 valid from MSD2 high
300
nS
BootROM/Flash Interface
Read Cycle Timing (Byte mode)
SYMBOL
DESCRIPTION
MIN.
MAX
UNIT
TRC
Read Cycle Time
210
-
nS
TACS
Address valid to CS# asserted
0
5
nS
TCES
CE# valid to Data valid
-
210
nS
TCEH
Data hold from CE# deasserted
0
-
nS
TDLES
Data valid to LE enable
10
-
μ
S
TDLEH
LE enable high time
20
-
nS
Read Cycle Timing (Double Word mode)
Symbol
Parameters
MIN,
MAX.
Unit
TRC
Read Cycle Time
210
-
nS
TACS
Address valid to CS# asserted
0
5
nS
TCES
CE# valid to data valid
-
210
ns
TAD
Address valid to data Valid
-
210
ns
TDH
Data hold from address deasserted
0
-
ns
TCEH
Data hold from CE# deasserted
0
-
ns
TDLES
Data valid to LE enable
10
-
ns
TDLEH
LE enable high time
20
-
ns
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