HCS08 datasheet(290/316 Pages) NXP

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Appendix A Electrical Characteristics

MC9S08SG8 MCU Series Data Sheet, Rev. 8

290

Freescale Semiconductor

Low-voltage inhibit reset/recover

hysteresis

Vhys

5 V

—

100

—

3 V

—

P Bandgap Voltage Reference13

VBG

1.18

1.20

1.21

1.17

1.20

1.22

1 Typical values are measured at 25

C. Characterized, not tested.

2 Electrical characteristics only apply to the temperature rated devices marked with x.

3 When a pin interrupt is configured to detect rising edges, pulldown resistors are used in place of pullup resistors.

4 The specified resistor value is the actual value internal to the device. The pullup value may measure higher when measured externally on

the pin.

5 Power supply must maintain regulation within operating V

DD range during instantaneous and operating maximum current conditions. If

positive injection current (VIn > VDD) is greater than IDD, the injection current may flow out of VDD and could result in external power supply

going out of regulation. Ensure external VDD load will shunt current greater than maximum injection current. This will be the greatest risk

when the MCU is not consuming power. Examples are: if no system clock is present, or if clock rate is very low (which would reduce overall

power consumption).

6 All functional non-supply pins are internally clamped to V

SS and VDD.

7 Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate resistance

values for positive and negative clamp voltages, then use the larger of the two values.

8 The RESET pin does not have a clamp diode to V

DD. Do not drive this pin above VDD.

9 Maximum is highest voltage that POR will occur.

10 Simulated, not tested

11 Device functionality is guaranteed between the LVD threshold VLVD0 and VDD Min.When VDD is below the minimum operating voltage

(VDD Min), the analog parameters for the IO pins, ACMP and ADC, are not guaranteed to meet data sheet performance parameters.

12 In addition to LVD, it is recommended to also use the LVW feature. LVW can trigger an interrupt and be used as an indicator to warn that the

VDD is dropping,so that the software can take actions accordingly before the VDD drops below VDD Min

13 Factory trimmed at V

DD = 5.0 V

Table A-6. DC Characteristics (continued)

Num C

Characteristic

Symbol

Condition

Min

Typ1

Max

Unit

Temp Rated2

Stand

ard

AEC

Grade

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