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參數(shù)資料
| 型號(hào)： | Z8913820FSC |
| 廠商： | ZILOG INC |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | 8-BIT, 20.48 MHz, MIXED DSP, PQFP100 |
| 封裝： | QFP-100 |
| 文件頁數(shù)： | 22/65頁 |
| 文件大小： | 2054K |
| 代理商： | Z8913820FSC |
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Z89138/Z89139
Zilog
Voice Processing Controllers
DS97TAD0201
P R E L I M I N A R Y
29
1
Port 5 (P53-P50). Port 5 is a 4-bit, bidirectional, CMOS
compatible I/O port (Figure 16). These four I/O lines are
configured under software control independently as inputs
or outputs. Port 5 is always available for I/O operation. The
input buffers are Schmitt-triggered. Bits programmed as
outputs can be globally programmed as either push-pull or
open-drain.
Port 5 is a bit programmable general-purpose I/O port. The
control registers for Port 5 are mapped into the expanded
register file (Bank F) of the Z8.
Auto Latch. The Auto Latch on Port 5 puts valid CMOS
levels on all CMOS inputs which are not externally driven.
Whether this level is 0 or 1 cannot be determined. A valid
CMOS level, rather than a floating node, reduces exces-
sive supply current flow in the input buffer.
Figure 16. Port 5 Conguration
OEN
Out
In
Pad
Auto Latch
Port 5
(I/O)
Z89138/139
MCU
R = 500 K
1.5
2.3V Hysteresis
Open-Drain
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| Z8913829ASC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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| Z89139 | 制造商:ZILOG 制造商全稱:ZILOG 功能描述:Voice Processing Controllers |
| Z8913920ASC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| Z8913920FSC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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