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參數(shù)資料
| 型號： | IS80C31-24W |
| 廠商： | INTEGRATED SILICON SOLUTION INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | CMOS SINGLE CHIP 8-BIT MICROCONTROLLER |
| 中文描述： | 8-BIT, 24 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-40 |
| 文件頁數(shù)： | 32/43頁 |
| 文件大?。?/td> | 337K |
| 代理商： | IS80C31-24W |
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IS80C51
IS80C31
32
Integrated Silicon Solution, Inc. — 1-800-379-4774
MC003-1D
11/19/98
ISSI
Table 10. Status of the External Pins During Idle and Power-down Modes.
Mode
Memory
ALE
PSEN
PORT 0
PORT 1
PORT 2
PORT 3
Idle
Internal
1
1
Data
Data
Data
Data
Idle
External
1
1
Float
Data
Address
Data
Power-down
Internal
0
0
Data
Data
Data
Data
Power-down
External
0
0
Float
Data
Data
Data
On-Chip Oscillators
The on-chip oscillator circuitry of the IS80C51/31 is a single
stage linear inverter, intended for use as a crystal-controlled,
positive reactance oscillator (Figure 21). In this application
the crystal is operated in its fundamental response mode as
an inductive reactance in parallel resonance with
capacitance external to the crystal (Figure 24). Examples
of how to drive the clock with external oscillator are shown
in Figure 22.
Figure 21. Oscillator Connections
The crystal specifications and capacitance values (C1 and
C2 in Figure 21) are not critical. 20 pF to 30 pF can be used
in these positions at a12 MHz to 24 MHz frequency with
good quality crystals. (For ranges greater than 24 MHz
refer to Figure 23.) A ceramic resonator can be used in
place of the crystal in cost-sensitive applications. When a
ceramic resonator is used, C1 and C2 are normally selected
to be of somewhat higher values. The manufacturer of the
ceramic resonator should be consulted for recommendation
on the values of these capacitors.
GND
XTAL1
XTAL2
EXTERNAL
OSCILLATOR
SIGNAL
NC
Figure 22. External Clock Drive Configuration
C1
C2
GND
XTAL1
XTAL2
相關PDF資料 |
PDF描述 |
|---|---|
| IS80C31-24WI | CMOS SINGLE CHIP 8-BIT MICROCONTROLLER |
| IS80C31-40PL | CMOS SINGLE CHIP 8-BIT MICROCONTROLLER |
| IS80C31-40PLI | CMOS SINGLE CHIP 8-BIT MICROCONTROLLER |
| IS80C31-40PQ | CMOS SINGLE CHIP 8-BIT MICROCONTROLLER |
| IS80C31-40PQI | CMOS SINGLE CHIP 8-BIT MICROCONTROLLER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| IS80C31-24WI | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP 8-BIT MICROCONTROLLER |
| IS80C31-25 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| IS80C31-30 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| IS80C31-36 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| IS80C31-40PL | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP 8-BIT MICROCONTROLLER |
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