P87C554 查看數據表（PDF） - Philips Electronics

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P87C554

80C51 8-bit microcontroller 16K/512 OTP/RAM 8 channel 10-bit A/D, I2C, PWM, capture/compare, high I/O

Philips Electronics 

Philips Semiconductors

80C51 8-bit microcontroller

16K/512 OTP/RAM, 8 channel 10-bit A/D, I2C, PWM,

capture/compare, high I/O

Product data

P87C554

20

16

MAXIMUM ACTIVE MODE

12

IDD mA

8

TYPICAL ACTIVE MODE

4

MAXIMUM IDLE MODE

TYPICAL IDLE MODE

0

0

4

8

12

16

f (MHz)

SU01116

Figure 57. 16 MHz Version Supply Current (IDD) as a Function of Frequency at XTAL1 (fOSC)

VDD

P1.6

P1.7

VDD

(NC)

CLOCK SIGNAL

RST

STADC

XTAL2

XTAL1

VSS

VDD

IDD

VDD

VDD

P0

EA

EW

AVSS

AVref–

SU00218

Figure 58. IDD Test Condition, Active Mode

All other pins are disconnected1

1. Active Mode:

a. The following pins must be forced to VDD: EA, RST, Port 0, and EW.

b. The following pins must be forced to VSS: STADC, AVss, and AVref–.

c. Ports 1.6 and 1.7 should be connected to VDD through resistors of sufficiently high value such that the sink current into these pins

cannot exceed the IOL1 spec of these pins.

d. The following pins must be disconnected: XTAL2 and all pins not specified above.

2002 Mar 25

70

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