參數(shù)資料
型號: EP7211-CP-A
廠商: CRYSTAL SEMICONDUCTOR CORP
元件分類: 外設(shè)及接口
英文描述: HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER
中文描述: MULTIFUNCTION PERIPHERAL, PBGA256
封裝: PLASTIC, BGA-256
文件頁數(shù): 149/166頁
文件大?。?/td> 2623K
代理商: EP7211-CP-A
EP7211
High-Performance Ultra-Low-Power System-on-Chip with LCD Controller
149
Electrical Specifications
DS352PP3
JUL 2001
6.5
I/O Buffer Characteristics
All I/O buffers on the EP7211 are CMOS threshold input bidirectional buffers except the oscillator
and power pads. For signals that are nominally inputs, the output buffer is only enabled during pin
test mode. All output buffers are tristated during system (hi-Z) test mode. All buffers have a standard
CMOS threshold input stage (apart from the Schmitt triggered inputs) and CMOS slew rate
controlled output stages to reduce system noise.
Table 6-4. I/O Buffer Output Characteristics
defines the I/O buffer output characteristics which will apply across the full range of temperature and
voltage (i.e., these values are for 3.3 V, +70
°
C).
All propagation delays are specified at 50% V
DD
to 50% V
DD
, all rise times are specified as 10%
V
DD
to 90% V
DD
and all fall times are specified as 90% V
DD
to 10% V
DD
.
Table 6-4. I/O Buffer Output Characteristics
Buffer Type
Drive
Current
Propagation
Delay (Max)
Rise Time
(Max)
Fall Time
(Max)
Load
I/O strength 1
±4 mA
7
14
14
50 pF
I/O strength 2
±12 mA
5
6
6
50 pF
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