P80C32X2BA datasheet(11/62 Pages) PHILIPS

Part #	P80C32X2BA

Description	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)

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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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

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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P80C32X2BA Datasheet(PDF) 11 Page - NXP Semiconductors

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