AT89C51CC03U-RDTIM datasheet(169/195 Pages) ATMEL

169 / 195 page

169

AT89C51CC03

4182I–CAN–06/05

Notes: 1. Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 81.), VIL =

VSS + 0.5V,

VIH = VCC - 0.5V; XTAL2 N.C.; EA = RST = Port 0 = VCC. ICC would be slightly higher if a crystal oscillator used (see Figure

78.).

2. Idle ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns, VIL = VSS + 0.5V, VIH = VCC -

0.5V; XTAL2 N.C; Port 0 = VCC; EA = RST = VSS (see Figure 79.).

3. Power-down ICC is measured with all output pins disconnected; EA = VCC, PORT 0 = VCC; XTAL2 NC.; RST = VSS (see Fig-

ure 80.). In addition, the WDT must be inactive and the POF flag must be set.

4. Capacitance loading on Ports 0 and 2 may cause spurious noise pulses to be superimposed on the VOLs of ALE and Ports 1

and 3. The noise is due to external bus capacitance discharging into the Port 0 and Port 2 pins when these pins make 1 to 0

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.

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

6. 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, 3 and 4: 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.

VOH

Output High Voltage, ports 1, 2, 3, and 4

VCC - 0.3

VCC - 0.7

VCC - 1.5

IOH = -10 µA

IOH = -30 µA

IOH = -60 µA

VCC = 3V to 5.5V

VOH1

Output High Voltage, port 0, ALE, PSEN

VCC - 0.3

VCC - 0.7

VCC - 1.5

IOH = -200 µA

IOH = -3.2 mA

IOH = -7.0 mA

VCC = 5V ± 10%

RRST

RST Pulldown Resistor

100

200

Ω

IIL

Logical 0 Input Current ports 1, 2, 3 and 4

-50

µA

Vin = 0.45V

ILI

Input Leakage Current

±10

µA

0.45V < Vin < VCC

ITL

Logical 1 to 0 Transition Current, ports 1, 2, 3

and 4

-650

µA

Vin = 2.0V

CIO

Capacitance of I/O Buffer

Fc = 1 MHz

TA = 25

°C

IPD

Power-down Current Industrial

150

µA3V < V

CC < 5.5V

(3)

Power-down Current Automotive

100

350

µA3V < V

CC < 5.5V

(3)

ICC

Power Supply Current

ICCOP = 0.4 Frequency (MHz) + 8

ICCIDLE = 0.2 Frequency (MHz) + 8

Vcc = 5.5V(1)(2)

ICCWRITE

Power Supply Current on flash or EEdata write

0.8 x

Frequency

(MHz) + 15

VCC = 5.5V

Table 116. DC Parameters in Standard Voltage (Continued)

Symbol

Parameter

Min

Typ(5)

Max

Unit

Test Conditions

AT89C51CC03U-RDTIM 数据表(PDF) 169 Page - ATMEL Corporation

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