AT89C51RC2-3CSCM View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C51RC2-3CSCM

8-bit Microcontroller with 16K/32K Bytes Flash

Atmel Corporation 

TA = -40°C to +85°C; VSS = 0V;

VCC =2.7V to 5.5V and F = 0 to 40 MHz (both internal and external code execution)

VCC =4.5V to 5.5V and F = 0 to 60 MHz (internal code execution only) (Continued)

Symbol Parameter

VOH1 Output High Voltage, port 0, ALE, PSEN

Min

Typ

VCC - 0.3

VCC - 0.7

VCC - 1.5

Max

Unit Test Conditions

VCC = 5V ± 10%

V IOH = -200 μA

V IOH = -3.2 mA

V IOH = -7.0 mA

0.9 VCC

VCC = 2.7V to 5.5V

V IOH = -10 μA

RRST RST Pulldown Resistor

50

200(5)

250

kΩ

IIL

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

-50

μA VIN = 0.45V

ILI

Input Leakage Current for P0 only

±10

μA 0.45V < VIN < VCC

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

-650

μA VIN = 2.0V

CIO Capacitance of I/O Buffer

10

pF

Fc = 3 MHz

TA = 25°C

IPD

ICCOP

ICCIDLE

Power Down Current

Power Supply Current on normal mode

Power Supply Current on idle mode

100

150

μA 4.5V < VCC < 5.5V(3)

0.4 x Frequency (MHz) + 5 mA VCC = 5.5V(1)

0.3 x Frequency (MHz) + 5 mA VCC = 5.5V(1)

ICCProg Power Supply Current during flash Write / Erase

0.4 x

Frequency

(MHz) + 20

mA VCC = 5.5V(8)

Notes:

1. Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 49.), 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

46).

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 47).

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

ure 48).

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

5V.

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 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.

7. For other values, please contact your sales office.

8. Icc Flash Write operation current while an on-chip flash page write is on going.

9. Flash Retention is guaranteed with the same formula for VCC Min down to 0.

108 AT89C51RB2/RC2

4180E–8051–10/06

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