參數(shù)資料
型號(hào): AM188ER-25KCW
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: CA-BAYONET
中文描述: 16-BIT, 25 MHz, MICROCONTROLLER, PQFP100
封裝: PLASTIC, QFP-100
文件頁(yè)數(shù): 84/112頁(yè)
文件大小: 2878K
代理商: AM188ER-25KCW
84
Am186
TM
ER and Am188
TM
ER Microcontrollers Data Sheet
DRAFT
Switching Characteristics over Commercial and Industrial Operating Ranges
PSRAM Refresh Cycle (25 MHz and 33 MHz)
Notes:
All timing parameters are measured at V
CC
/2 with 50 pF loading on CLKOUTA unless otherwise noted. All output test conditions
are with C
L
=50 pF For switching tests, V
IL
=0.3 V and V
IH
=V
CC
–0.3 V.
a
Testing is performed with equal loading on referenced pins.
Preliminary
Parameter
Description
25 MHz
Min
33 MHz
Min
No.
General Timing Responses
9
t
CHLH
10
t
LHLL
11
t
CHLL
Read/Write Cycle Timing Responses
25
t
26
t
RLRH
27
t
CLRH
28
t
RHLH
80
t
CLCLX
81
t
CLCSL
Refresh Timing Cycle Parameters
79
t
CLRFD
82
t
CLRF
85
t
RFCY
86
t
LCRF
Symbol
Max
Max
Unit
ALE Active Delay
ALE Width
ALE Inactive Delay
20
15
ns
ns
ns
t
CLCL
–10=30
t
CLCL
–10=20
20
15
RD Active Delay
RD Pulse Width
RD Inactive Delay
RD Inactive to ALE High
(a)
LCS Inactive Delay
LCS Active Delay
0
20
0
15
ns
ns
ns
ns
ns
ns
2t
CLCL
–15=65
0
t
CLCH
–3
0
0
2t
CLCL
–15=45
0
t
CLCH
–3
0
0
20
15
20
20
15
15
CLKOUTA Low to RFSH Valid
CLKOUTA High to RFSH Invalid
RFSH Cycle Time
LCS Inactive to RFSH Active Delay
0
0
20
20
0
0
15
15
ns
ns
ns
ns
6 x t
CLCL
2t
CLCL
–3
6 x t
CLCL
2t
CLCL
–3
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