T89C51RD2-3CSCM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'T89C51RD2-3CSCM' PDF : 104 Pages View PDF
transitions during bus operation. In the worst cases (capacitive loading 100pF), the noise pulse on the ALE line may exceed
0.45V with maxi VOL 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, IOL must be externally limited as follows:
Maximum IOL per port pin: 10 mA
Maximum IOL per 8-bit port:
Port 0: 26 mA
Ports 1, 2 and 3: 15 mA
Maximum total IOL for all output pins: 71 mA
If IOL 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. ICC Test Condition, Active Mode
VCC
ICC
VCC
VCC
P0
VCC
RST EA
(NC)
CLOCK
SIGNAL
XTAL2
XTAL1
VSS
All other pins are disconnected.
Figure 34. ICC Test Condition, Idle Mode
VCC
ICC
VCC
VCC
P0
RST EA
(NC)
CLOCK
SIGNAL
XTAL2
XTAL1
VSS
All other pins are disconnected.
84 T89C51RD2
4243G–8051–05/03
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