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參數(shù)資料
| 型號(hào)： | 87C52 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 80C51 8-bit microcontroller family 8K.64K/256.1K OTP/ROM/ROMless, low voltage 2.7V.5.5V, low power, high speed 33 MHz |
| 中文描述： | 80C51的8位單片機(jī)系列8K.64K/256.1K檢察官辦公室/光盤/無ROM，2.7V.5.5V低電壓，低功耗，高速33兆赫 |
| 文件頁數(shù)： | 11/62頁 |
| 文件大小： | 403K |
| 代理商： | 87C52 |
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Philips Semiconductors
Product data
P80C3xX2; P80C5xX2;
P87C5xX2
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
2003 Jan 24
11
PIN NUMBER
PLCC
32
MNEMONIC
PSEN
NAME AND FUNCTION
Program Store Enable:
The read strobe to external program memory. When the
device is executing code from the external program memory, PSEN is activated
twice each machine cycle, except that two PSEN activations are skipped during
each access to external data memory. PSEN is not activated during fetches from
internal program memory.
TYPE
O
TSSOP
18
LQFP
26
DIP
29
EA/V
PP
31
35
29
20
I
External Access Enable/Programming Supply Voltage:
EA must be externally held low to enable
the device to fetch code fromexternal programmemory locations 0000H to
0FFFH/1FFFH/3FFFH/7FFFH. If EA is held high, the device executes frominternal programmemory
unless the programcounter contains an address greater than the on-chip ROM/OTP. This pin also
receives the 12.75 V programmng supply voltage (V
PP
) during EPROMprogrammng. If security bit
1 is programmed, EA will be internally latched on Reset.
XTAL1
19
21
15
8
I
Crystal 1:
Input to the inverting oscillator amplifier and input to the internal clock
generator circuits.
XTAL2
NOTES:
To avoid “l(fā)atch-up” effect at power-on, the voltage on any pin at any time must not be higher than V
CC
+ 0.5 V or V
SS
– 0.5 V, respectively.
1. Absent in the TSSOP38 package.
18
20
14
7
O
Crystal 2:
Output from the inverting oscillator amplifier.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 87C52/BMA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| 87C52/BQA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| 87C52-16/BMA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| 87C52-16/BQA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| 87C521FFFA | 制造商: 功能描述: 制造商:undefined 功能描述: |
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