T89C51RD2-RDTIM datasheet(84/104 Pages) ATMEL

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T89C51RD2

4243G–8051–05/03

transitions during bus operation. In the worst cases (capacitive loading 100pF), the noise pulse on the ALE line may exceed

0.45V with maxi V

OL peak 0.6V. A Schmitt Trigger use is not necessary.

8. Typicals are based on a limited number of samples and are not guaranteed. The values listed are at room temperature..

9. Under steady state (non-transient) conditions, I

OL must be externally limited as follows:

Maximum I

OL per port pin: 10 mA

Maximum IOL per 8-bit port:

Port 0: 26 mA

Ports 1, 2 and 3: 15 mA

Maximum total I

OL for all output pins: 71 mA

If I

OL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater

than the listed test conditions.

Figure 33. I

CC Test Condition, Active Mode

Figure 34. I

CC Test Condition, Idle Mode

VCC

ICC

(NC)

CLOCK

SIGNAL

All other pins are disconnected.

RST

XTAL2

XTAL1

RST

XTAL2

XTAL1

VSS

VCC

(NC)

All other pins are disconnected.

CLOCK

SIGNAL

T89C51RD2-RDTIM 数据表(PDF) 84 Page - ATMEL Corporation

T89C51RD2-RDTIM 数据表(HTML) 84 Page - ATMEL Corporation

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