参数资料
型号: P80C52X2BN
厂商: NXP SEMICONDUCTORS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PDIP40
封装: 0.600 INCH, PLASTIC, MO-015, SOT-129-1, DIP-40
文件页数: 3/62页
文件大小: 404K
代理商: P80C52X2BN
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)
2002 Jan 24
11
PIN NUMBER
MNEMONIC
NAME AND FUNCTION
TYPE
TSSOP
LQFP
PLCC
DIP
PSEN
29
32
26
18
O
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.
EA/VPP
31
35
29
20
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 0000H to
0FFFH/1FFFH/3FFFH/7FFFH. If EA is held high, the device executes from internal program memory
unless the program counter contains an address greater than the on-chip ROM/OTP. This pin also
receives the 12.75 V programming supply voltage (VPP) during EPROM programming. 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
18
20
14
7
O
Crystal 2: Output from the inverting oscillator amplifier.
NOTES:
To avoid “latch-up” effect at power-on, the voltage on any pin at any time must not be higher than VCC + 0.5 V or VSS – 0.5 V, respectively.
1. Absent in the TSSOP38 package.
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