參數(shù)資料
型號: SAA2023
廠商: NXP Semiconductors N.V.
英文描述: Drive processor for DCC systems
中文描述: 戴納信貸驅動處理器的系統(tǒng)
文件頁數(shù): 23/56頁
文件大小: 274K
代理商: SAA2023
May 1994
23
Philips Semiconductors
Preliminary specification
Drive processor for DCC systems
SAA2023
Fig.19 Slow SRAM write cycle timing.
handbook, full pagewidth
WEN
OEN
A0 to A16
D0 to D7
tAW
WC
MGB395
tDW1
tDH
WRITE
tWP
t
tAW
WC
tDH
WRITE
tWP
t
tDW2
ADDRESS
ADDRESS
DATA
DATA
Table 16
Timing values for Figs 10 to 12.
SYMBOL
VALUE (ns)
t
RP
t
RAS
t
RCD
t
CP
t
CAS
t
ASR
t
RAH
t
ASC
t
CAM
t
DS
t
DH
t
WCS
t
WCH
t
RAC
t
CAC
110
510
70
30
100
100
25
30
100
25
100
30
100
160
80
Table 17
Timing values for Figs 13 to 17.
Table 18
Timing values for Figs 18 and 19.
SYMBOL
VALUE (ns)
t
WP
t
AW
t
WC
t
DW
t
DM
t
AA
t
HC
140
180
200
72
25
240
250
SYMBOL
VALUE (ns)
t
WP
t
AW
t
WC
t
DW
t
DM
t
AA
225
260
300
140
25
280
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