Intel 83C51FA, 80C51FA specifications Symbol Parameter Min Typ Max Unit Test Conditions, Rrst, Cio

Page 8

AUTOMOTIVE 80C51FA/83C51FA DC CHARACTERISTICS: (TA e b40§C to a125§C; VCC e 5V g10%; VSS e 0V) (Continued)

 

Symbol

Parameter

 

Min

 

Typ

 

Max

Unit

Test Conditions

 

ITL

Logical 1 to 0 Transition Current

 

 

b265

 

b650

mA

VIN e 2V

 

 

(Ports 1, 2, and 3)

 

 

 

 

 

 

 

 

 

 

RRST

RST Pulldown Resistor

 

40

100

 

225

KX

 

 

CIO

Pin Capacitance

 

 

10

 

 

 

pF

@1MHz, 25§C

 

ICC

Power Supply Current:

 

 

 

 

 

 

40

mA

(Note 3)

 

 

Running at 12 MHz (Figure 5)

 

 

 

 

 

 

 

 

Idle Mode at 12 MHz (Figure 5)

 

 

 

 

 

15

mA

 

 

 

Power Down Mode (IPD)

 

 

 

 

 

 

150

mA

 

NOTES:

 

 

 

 

 

 

 

 

 

 

1.

Capacitive loading on Ports 0 and 2 may cause 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 operations. In applications where capacitance loading exceeds 100 pFs, the noise pulse on the ALE

 

signal may exceed 0.8V. In these cases, it may be desirable to qualify ALE with a Schmitt Trigger, or use an Address Latch

 

with a Schmitt Trigger Strobe input.

 

 

 

 

 

 

 

 

 

2.

Capacitive loading on Ports 0 and 2 cause the VOH on ALE and

PSEN

to drop below the 0.9 VCC specification when the

 

address lines are stabilizing.

 

 

 

 

 

 

 

 

 

3.

See Figures 6±9 for test conditions. Minimum VCC for Power Down is 2.0V.

 

 

 

4.

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

 

5.0V.

 

 

 

 

 

 

 

 

 

 

5.

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 -

26 mA

 

 

 

 

 

 

 

 

 

Port 0:

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

 

6.

Contact Intel for design-in information.

 

 

 

 

 

 

 

 

 

8

Image 8
Contents EVENT-CONTROL Chmos SINGLE-CHIP BIT Microcontroller Memory OrganizationAutomotive 80C51FA/83C51FA To + Extended 80C51FA/83C51FA Product OptionsTo + Extended Automotive PIN Descriptions Port Pin Alternate FunctionOscillator Characteristics P3.7 RD external data memory read strobeIdle Mode Power Down ModeOnce Mode Status of the External Pins during Idle and Power DownXTAL, RST Symbol Parameter Min Typ MaxPdip Symbol Parameter Min Typ Max Unit Test Conditions RrstRST Pulldown Resistor 100 225 CIOICC vs Frequency Explanation of the AC Symbols External Memory CharacteristicsExternal Data Memory Write Cycle External Program Memory Read CycleExternal Data Memory Read Cycle Serial Port TIMING-SHIFT Register Mode Shift Register Mode Timing WaveformsExternal Clock Drive External Clock Drive WaveformDatasheet Revision History AC Testing INPUT, Output Waveforms Float Waveforms