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參數資料
| 型號： | Z8S180 |
| 廠商： | ZiLOG, Inc. |
| 英文描述： | CAP 0.1UF 100V +80-20% Z5U AXIAL TR-14 |
| 中文描述： | 強化Z180微處理器 |
| 文件頁數： | 49/70頁 |
| 文件大?。?/td> | 387K |
| 代理商： | Z8S180 |
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Z80180/Z8S180/Z8L180
Enhanced Z180 Microprocessor
Zilog
DS971800401
P R E L I M I N A R Y
1-49
1
CLOCK MULTIPLIER REGISTER (Z180 MPU ADDRESS 1EH)
Bit 7.
X2 Clock Multiplier Mode. When this bit is set to 1,
this allows the programmer to double the internal clock
from that of the external clock. This feature will only oper-
ated effectively with frequencies of 10-16 MHz (20-32MHz
internal).
When
this
Z80180/Z8S180/Z8L180 device will operate in normal
mode. Upon powerup, this feature is disabled.
bit
is
set
to
0,
the
Bit 6.
Low Noise Crystal Option. Setting this bit to 1 will
enable the low noise option for the EXTAL and XTAL pins.
This option reduces the gain, in addition to reduction the
output drive capability to 30% of its original drive capability.
The Low Noise Crystal Option is recommended in the use
of crystals for PCMCIA applications where the crystal may
be driven too hard by the oscillator. Setting this bit to 0 will
select for normal operation of the EXTAL and XTAL pins.
The default for this bit is 0.
Note:
Operating restrictions for device operation are listed
below. If low noise option is required, and normal device
operation is needed, use the clock multiplier feature.
Figure 54. Clock Multiplier Register
1
1
1
0
0
1
7
6
5
4
3
2
1
1
0
1
RESERVED
LOW NOISE CRYSTAL
X2 CLOCK MULTIPLIER
Table 9. Low Noise Option
Low Noise
ADDR 1E, bit 6=1
20 MHz @ 4.5V, 100
°
C
10 MHz @ 3.0V, 100
°
C
Normal
ADDR 1E, bit 6=0
33 MHz @ 4.5V, 100
°
C
20 MHz @ 3.0V, 100
°
C
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相關代理商/技術參數 |
參數描述 |
|---|---|
| Z8S18000ZCO | 功能描述:開發(fā)板和工具包 - 其他處理器 Z8S180 App Board RoHS:否 制造商:Freescale Semiconductor 產品:Development Systems 工具用于評估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
| Z8S18000ZEM | 功能描述:仿真器/模擬器 Z8S180 Emulator Kit RoHS:否 制造商:Blackhawk 產品:System Trace Emulators 工具用于評估:C6000, C5000, C2000, OMAP, DAVINCI, SITARA, TMS470, TMS570, ARM 7/9, ARM Cortex A8/R4/M3 用于:XDS560v2 |
| Z8S18006FEC | 制造商:ZILOG 制造商全稱:ZILOG 功能描述:ENHANCED Z180 MICROPROCESSOR |
| Z8S18006FSC | 制造商:ZILOG 制造商全稱:ZILOG 功能描述:ENHANCED Z180 MICROPROCESSOR |
| Z8S18006PEC | 制造商:ZILOG 制造商全稱:ZILOG 功能描述:ENHANCED Z180 MICROPROCESSOR |
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