参数资料
型号: XR17V252IM-0A-EVB
厂商: Exar Corporation
文件页数: 54/69页
文件大小: 0K
描述: EVAL BOARD FOR XR17V252 100TQFP
标准包装: 1
系列: *
XR17V252
58
66 MHZ PCI BUS DUAL UART WITH POWER MANAGEMENT SUPPORT
REV. 1.0.2
AC ELECTRICAL CHARACTERISTICS
TA=-40
O TO+85OC (INDUSTRIAL GRADE) VCC = 3.0 - 3.6V
SYMBOL
PARAMETER
MIN
MAX
UNITS
NOTES
XTAL1
UART Crystal Oscillator
24
MHz
On-chip osc.
ECLK
External Clock
64
MHz
IOH(AC, min)
Switching Current High, Min
-12VCC
mA
Vout = 0.3VCC
IOH(AC, max) Switching Current High, Max
-32VCC
mA
Vout = 0.7VCC
IOL(AC, min)
Switching Current Low, Min
16VCC
mA
Vout = 0.6VCC
IOL(AC, max) Switching Current Low, Max
38VCC
mA
Vout = 0.18VCC
ICH
High Clamp Current
25+(Vin-VCC-1)/0.015
mA
VCC+4 > Vin
≥ VCC+1
ICL
Low Clamp Current
-25+(Vin+1)/0.015
mA
-3 < Vin
≤ -1
SlewR
Output Rise Slew Rate
1
4
V/ns
0.3VCC to 0.6VCC
SlewF
Output Fall Slew Rate
1
4
V/ns
0.6VCC to 0.3VCC
Tcyc
CLK Cycle Time
15
ns
PCI bus Clock, CLK
up to 66.67MHz
Thigh
CLK High Time
6
ns
Tlow
CLK Low Time
6
ns
CLK Slew Rate
1.5
4
V/ns
Tval
CLK to Signal Valid Delay
2
6
ns
Bused and point to
point signals
Ton
Float to Active Delay
2
ns
Toff
Active to Float Delay
14
ns
Tsu
Input Setup Time to CLK -
bused signals
3
ns
Tsu (ptp)
Input Setup Time to CLK -
point to point signals
5
ns
Th
Input Hold Time from CLK
0
ns
Trst
RST# Active Time After
Power Stable
1
ms
Trst-clk#
RST# Active Time After CLK
Stable
100
us
Trst-off
Reset Active to output float
delay
40
ns
Trhfa
RST# HIGH to first Configu-
ration access
225
clocks
Trhff
RST# HIGH to first FRAME#
assertion
5
clocks
RST# Slew Rate
50
mV/ns
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