80C652 datasheet(12/25 Pages) PHILIPS

12 / 25 page

Phlips Semiconductors

Product specification

80C652/83C652

CMOS single-chip 8-bit microcontrollers

1996 Aug 15

NOTES FOR DC ELECTRICAL CHARACTERISTICS:

1. See Figures 9 through 11 for IDD test conditions.

2. The operating supply current is measured with all output pins disconnected; XTAL1 driven with tr = tf = 5ns;

VIL = VSS + 0.5V; VIH = VDD –0.5V; XTAL2 not connected; EA = RST = Port 0 = P1.6 = P1.7 = VDD. See Figure 9.

3. The idle mode supply current is measured with all output pins disconnected; XTAL1 driven with tr = tf = 5ns; VIL = VSS + 0.5V;

VIH = VDD –0.5V; XTAL2 not connected; Port 0 = P1.6 = P1.7 = VDD; EA = RST = VSS. See Figure 10.

4. The power-down current is measured with all output pins disconnected; XTAL2 not connected; Port 0 = P1.6 = P1.7 = VDD;

EA = RST = VSS. See Figure 11.

5. 2V

≤ VPD ≤ VDDmax.

6. The input threshold voltage of P1.6 and P1.7 (SIO1) meets the I2C specification, so an input voltage below 0.3VDD will be recognized as a

logic 0 while an input voltage above 0.7VDD will be recognized as a logic 1.

7. Pins of ports 1 , 2, and 3 source a transition current when they are being externally driven from 1 to 0. The transition current reaches its

maximum value when VIN is approximately 2V.

8. Capacitive loading on ports 0 and 2 may cause spurious noise 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 the

worst cases (capacitive loading > 100pF), the noise pulse on the ALE pin may exceed 0.8V. In such cases, it may be desirable to qualify

ALE with a Schmitt Trigger, or use an address latch with a Schmitt Trigger STROBE input.

9. Under steady state (non-transient) conditions, IOL must be externally limited as follows: Maximum IOL = 10mA per port pin; Maximum

IOL = 26mA total for Port 0; Maximum IOL = 15mA total for Ports 1, 2, and 3; Maximum IOL = 71mA total for all output pins. If IOL exceeds the

test conditions, VOL may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test conditions.

10. Capacitive loading on ports 0 and 2 may cause the VOH on ALE and PSEN to momentarily fall below the 0.9VDD specification when the

address bits are stabilizing.

11. IDDMAX for other frequencies can be derived from Figure 1, where FREQ is the external oscillator frequency in MHz. IDDMAX is given in mA.

(1) MAXIMUM OPERATING MODE: VDD = VDDmax

(2) MAXIMUM IDLE MODE: VDD = VDDmax

fXTAL1 (MHz)

IDD

(mA)

Figure 1. IDD vs. Frequency

(2)

(1)

IDD

(mA)

fXTAL1 (MHz)

These values are valid within the specified

frequency range.

(1) MAXIMUM OPERATING MODE: VDD = VDDmax

(2) MAXIMUM IDLE MODE: VDD = VDDmax

These values are valid within the specified

frequency range.

(1)

(2)

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