T89C51RD2-3CSCM View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

T89C51RD2-3CSCM

0 to 40MHz Flash Programmable 8-bit Microcontroller

Atmel Corporation 

T89C51RD2

DC Parameters for Low

Voltage

TA = 0°C to +70°C; VSS = 0 V; VCC = 2.7 V to 3.6 V; F = 0 to 25 MHz

TA = -40°C to +85°C; VSS = 0 V; VCC = 2.7 V to 3.6 V; F = 0 to 25 MHz

Table 45. DC Parameters for Low Voltage

Symbol Parameter

Min

Typ(5)

VIL

VIH

VIH1

VOL

VOL1

VOH

VOH1

IIL

ILI

ITL

Input Low Voltage

Input High Voltage except XTAL1, RST

Input High Voltage, XTAL1, RST

Output Low Voltage, ports 1, 2, 3, 4 and 5 (6)

Output Low Voltage, port 0, ALE, PSEN (6)

Output High Voltage, ports 1, 2, 3, 4 and 5

Output High Voltage, port 0, ALE, PSEN

Logical 0 Input Current ports 1, 2, 3, 4 and 5

Input Leakage Current

Logical 1 to 0 Transition Current, ports 1, 2, 3, 4

and 5

-0.5

0.2 VCC + 0.9

0.7 VCC

0.9 VCC

0.9 VCC

RRST

RST Pulldown Resistor

50

90

CIO

Capacitance of I/O Buffer

IPD

Power Down Current

1

ICCOP Power Supply Current on normal mode

Max

0.2 VCC - 0.1

VCC + 0.5

VCC + 0.5

0.45

0.45

-50

±10

Unit Test Conditions

V

V

V

V IOL = 0.8 mA(4)

V IOL = 1.6 mA(4)

V IOH = -10 µA

V IOH = -40 µA

µA Vin = 0.45 V

µA 0.45 V < Vin < VCC

-650

µA Vin = 2.0 V

200

10

50

0.6 Freq (MHz)

+3

kΩ

pF

Fc = 1 MHz

TA = 25°C

µA VCC = 2.7 V to 3.6 V(3)

mA VCC = 3.6 V(1)

Power Supply Current during Flash Write / Erase

ICCProgFlash

0.3 Freq 0.4 Freq (MHz)

(MHz) + 10

+ 12

mA VCC = 3.6 V(1)

Power Supply Current during EEprom data Write

ICCProgEE / Erase

0.7 Freq 0.7 Freq (MHz)

(MHz) + 3

+ 18

mA VCC = 3.6 V(1)

ICCIDLE Power Supply Current on idle mode

0.3 Freq (MHz)

+2

mA VCC = 3.6 V(2)

4. Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 36.), VIL =

VSS + 0.5 V,

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

33.).

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

0.5 V; XTAL2 N.C; Port 0 = VCC; EA = RST = VSS (see Figure 34.).

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

ure 35.). In addition, the WDT must be inactive and the POF flag must be set.

7. 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

83

4243G–8051–05/03

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