参数资料
型号: YMF754-R
元件分类: 微控制器/微处理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PQFP128
封装: 0.40 MM PITCH, LQFP-128
文件页数: 48/58页
文件大小: 301K
代理商: YMF754-R
YMF754
January 9, 2001
- 52 -
4. AC Characteristics
4-1. Master Clock
(Fig.1)
Item
Symbol
Min.
Typ.
Max.
Unit
XI24 Cycle Time
tXICYC
-
40.69
-
ns
XI24 High Time
tXIHIGH
13
-
27
ns
XI24 Low Time
tXILOW
13
-
27
ns
Note : Applicable at connecting with a
crystal oscillator,
Top = 0-70°C, PVDD=3.3
±0.3 V, VDD=3.3±0.3 V, CVDD=2.5±0.2 V, LVDD=2.5±0.2 V
t
XI24
XICYC
t
XIHIGH
0.3 VDD3
0.5 VDD3
0.7 VDD3
t
XILOW
Fig.1: XI24 Master Clock timing
4-2. Reset
(Fig.2)
Item
Symbol
Min.
Typ.
Max.
Unit
Reset Active Time after Power Stable
tRST
1
-
ms
Power Stable to Reset Rising Edge
tRSTOFF
10
-
ms
2.5V Power Supply Delay
tVDD2ON
-
10
ms
Reset Slew Rate
-
50
-
mV/ns
Note : Top = 0-70°C, PVDD=3.3
±0.3 V, VDD=3.3±0.3 V, CVDD=2.5±0.2 V, LVDD=2.5±0.2 V, C
L=50 pF
RST#
CVDD, LVDD
PVDD, VDD
2.3 V
3.0 V
0.3 VDD3
t
RST
t
RSTOFF
t
VDD2ON
Fig.2: PCI Reset timing
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