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參數(shù)資料
| 型號： | P89C51RB2FB |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM |
| 中文描述： | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | 10 X 10 X 1.75 MM, PLASTIC, SOT-307-2, QFP-44 |
| 文件頁數(shù)： | 7/52頁 |
| 文件大?。?/td> | 289K |
| 代理商： | P89C51RB2FB |
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Philips Semiconductors
Preliminary specification
89C51RB2/89C51RC2/
89C51RD2
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM
1999 Sep 23
7
MNEMONIC
NAME AND FUNCTION
TYPE
PIN NUMBER
PQFP
PLCC
PDIP
PSEN
29
32
26
O
Program Store Enable:
The read strobe to external program memory. When
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.
EA/V
PP
31
35
29
I
External Access Enable/Programming Supply Voltage:
EA must be externally
held low to enable the device to fetch code from external program memory
locations. If EA is held high, the device executes from internal program memory.
The value on the EA pin is latched when RST is released and any subsequent
changes have no effect. This pin also receives the programming supply voltage
(V
PP
) during Flash programming.
Crystal 1:
Input to the inverting oscillator amplifier and input to the internal clock
generator circuits.
XTAL1
19
21
15
I
XTAL2
18
20
14
O
Crystal 2:
Output from the inverting oscillator amplifier.
NOTE:
To avoid “l(fā)atch-up” effect at power-on, the voltage on any pin (other than V
PP
) must not be higher than V
CC
+ 0.5 V or less than V
SS
– 0.5 V.
相關PDF資料 |
PDF描述 |
|---|---|
| P89C51RB2FP | 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM |
| P89C51RB2HFA | 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM |
| P89C51RB2HFB | 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM |
| P89C51RB2HFP | 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM |
| P89C51RC2FA | 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| P89C51RB2FP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM |
| P89C51RB2H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM |
| P89C51RB2HBA | 制造商:NXP Semiconductors 功能描述:8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQCC44 |
| P89C51RB2HBB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM |
| P89C51RB2HBBD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit Flash microcontroller family |
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