AT87C54X2-3CSUL View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT87C54X2-3CSUL

8-bit CMOS Microcontroller 16/32 Kbytes ROM/OTP

Atmel Corporation 

19.4

DC Parameters for Low Voltage

TA = 0°C to +70°C; VSS = 0 V; VCC = 2.7 V to 5.5 V ± 10%; F = 0 to 30 MHz.

TA = -40°C to +85°C; VSS = 0 V; VCC = 2.7 V to 5.5 V ± 10%; F = 0 to 30 MHz.

Table 19-2. DC Parameters for Low Voltage

Symbol

VIL

VIH

VIH1

VOL

VOL1

VOH

VOH1

IIL

ILI

ITL

RRST

Parameter

Input Low Voltage

Input High Voltage except XTAL1, RST

Input High Voltage, XTAL1, RST

Output Low Voltage, ports 1, 2, 3 (6)

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

Output High Voltage, ports 1, 2, 3

Output High Voltage, port 0, ALE, PSEN

Logical 0 Input Current ports 1, 2 and 3

Input Leakage Current

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

RST Pulldown Resistor

CIO

Capacitance of I/O Buffer

Min

-0.5

0.2 VCC + 0.9

0.7 VCC

0.9 VCC

0.9 VCC

50

Typ

90 (5)

Max

0.2 VCC - 0.1

VCC + 0.5

VCC + 0.5

0.45

0.45

-50

±10

-650

200

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

μA Vin = 2.0 V

kΩ

pF

Fc = 1 MHz

TA = 25°C

IPD

Power Down Current

20 (5)

10 (5)

50

30

μA

VCC = 2.0 V to 5.5 V(3)

VCC = 2.0 V to 3.3 V(3)

ICC

under

RESET

Power Supply Current Maximum values, X1

mode: (7)

ICC

Power Supply Current Maximum values, X1

operating mode: (7)

ICC

Power Supply Current Maximum values, X1

idle

mode: (7)

1 + 0.2 Freq

(MHz)

@12MHz 3.4

@16MHz 4.2

1 + 0.3 Freq

(MHz)

@12MHz 4.6

@16MHz 5.8

0.15 Freq (MHz)

+ 0.2

@12MHz 2

@16MHz 2.6

mA VCC = 3.3 V(1)

mA VCC = 3.3 V(8)

mA VCC = 3.3 V(2)

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

19-5.), 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..

2. 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 19-3.).

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

(see Figure 19-4.).

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.

44 AT/TS8xC54/8X2

4431E–8051–04/06

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