HCS08 datasheet(265/290 Pages) MOTOROLA

265 / 290 page

Data Sheet — MC9S08GB60/D V1.5

MOTOROLA

265

MC9S08GB/GT

Figure A-1 Pullup and Pulldown Typical Resistor Values (VDD = 3.0 V)

dc injection current(4), (5), (6), (7), (8)

VIN < VSS , VIN > VDD

Single pin limit

Total MCU limit, includes sum of all stressed pins

|IIC|

—

0.2

Input capacitance (all non-supply pins)(2)

CIn

—7

NOTES:

1. Typicals are measured at 25

°C.

2. This parameter is characterized and not tested on each device.

3. Measurement condition for pull resistors: VIn = VSS for pullup and VIn = VDD for pulldown.

4. Power supply must maintain regulation within operating VDD 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.

5. All functional non-supply pins are internally clamped to VSS and VDD.

6. 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.

7. This parameter is characterized and not tested on each device.

8. IRQ does not have a clamp diode to VDD. Do not drive IRQ above VDD.

Table A-4 DC Characteristics (Continued)

(Temperature Range = –40 to 85

°C Ambient)

Parameter

Symbol

Min

Typical(1)

Max

Unit

PULLUP RESISTOR TYPICALS

VDD (V)

1.8

2.2

2.4

2.6

2.8

3.2

3.4

3.6

°C

–40

°C

PULLDOWN RESISTOR TYPICALS

VDD (V)

1.8

2.3

2.8

3.3

°C

–40

°C

3.6

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