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參數(shù)資料
| 型號： | HPC-DEV-SYS2-E |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | CABLE, COAX, RG179, BROWN, 3MM, 25M; Length, Reel (Imperial):82ft; Attenuation, 400MHz:68.90dB; Capacitance:75pF/m; Conductor make-up:7/0.102 mm; Diameter, External:3.00mm; Impedance:75R; Length, Reel (Metric):25m; Resistance, per RoHS Compliant: Yes |
| 中文描述： | 高性能通信微控制器 |
| 文件頁數(shù)： | 11/30頁 |
| 文件大?。?/td> | 362K |
| 代理商： | HPC-DEV-SYS2-E |
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Pin Descriptions
(Continued)
POWER SUPPLIES
V
CC1
, V
CC2
GND
Positive Power Supply (two pins)
Ground for On-Chip Logic
DGND
Ground for Output Buffers
Note:
There are multiple electrically connected V
CC
pins on the chip, GND
and DGND are electrically isolated. All V
CC
pins and all ground pins
must be used.
CLOCK PINS
CKI
The System Clock Input
CKO
The System Clock Output (Inversion of CKI)
Pins CKI and CKO are usually connected across an external
crystal.
CK2
Clock Output (CKI divided by 2)
OTHER PINS
WO
This is an active low open drain output which
signals an illegal situation has been detected
by the WATCHDOG logic.
ST1
Bus Cycle Status Output indicates first op-
code fetch.
ST2
Bus Cycle Status Output indicates machine
states (skip and interrupt).
RESET
Active low input that forces the chip to restart
and sets the ports in a TRI-STATE mode.
RDY/HLD
Has two uses, selected by a software bit.
This pin is either a READY input to extend
the bus cycle for slower memories or a
HOLD-REQUEST input to put the bus in a
high impedance state for external DMA pur-
poses. In the second case the I4 pin can be-
come the READY input.
Connection Diagrams
Plastic and Leaded Chip Carriers
TL/DD/10422–18
Top View
See NS Package Number V68A
11
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HPC-DEV-SYS4 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High-Performance microController with A/D |
| HPC-DEV-SYS4-E | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High-Performance microController with A/D |
| HPC-DEV-WDBC | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High-Performance Communications MicroController |
| HPCI-13S4LU | 功能描述:模塊配件 ISAx7 PCIx4 PICMGx3 BACKPLANE AT/ATX PSU RoHS:否 制造商:Lantronix 產(chǎn)品: 用于: |
| HPCI-14S/ATX | 功能描述:模塊配件 ISAx8 PCIx4 PICMGx2 BACKPLANE RoHS:否 制造商:Lantronix 產(chǎn)品: 用于: |
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