32C87 datasheet(56/91 Pages) RENESAS

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M32C/87 Group (M32C/87, M32C/87A, M32C/87B)

5. Electrical Characteristics

REJ03B0127-0151 Rev.1.51 Jul 31, 2008

Page 56 of 85

Table 5.11

Voltage Detection Circuit Electrical Characteristics

(VCC1 = VCC2 = 3.0 to 5.5 V, VSS = 0 V, Topr = 25

°C unless otherwise specified)

NOTES:

1. Vdet4 > Vdet3

2. Vdet3r > Vdet3 is not guaranteed.

Table 5.12

Power Supply Circuit Timing Characteristics

NOTE:

1. When VCC1 = 5 V

Figure 5.1

Power Supply Timing Diagram

Symbol

Parameter

Measurement Condition

Standard

Unit

Min.

Typ.

Max.

Vdet4

Vdet4 detection voltage

VCC1 = 3.0 V to 5.5 V

3.3

3.8

4.4

Vdet3

Vdet3 detection voltage

3.0

Vdet3s

Hardware reset 2 hold voltage

2.0

Vdet3r

Hardware reset 2 release voltage

3.1

Symbol

Parameter

Measurement Condition

Standard

Unit

Min.

Typ.

Max.

td(P-R)

Wait time to stabilize internal supply voltage

when power-on

VCC1 = 3.0 to 5.5 V

td(S-R)

Wait time to release hardware reset 2

VCC1 = Vdet3r to 5.5 V

6(1)

td(E-A)

Start-up time for Vdet3 and Vdet4 detection

circuit

VCC1 = 3.0 to 5.5 V

μs

td(P-R)

VCC1

CPU clock

Recommended

operating voltage

td(P-R)

Wait time to stabilize internal

supply voltage when power-on

td(S-R)

VCC1

CPU clock

Vdet3r

td(S-R)

Wait time to release

hardware reset 2

td(E-A)

Start-up time for Vdet3 and Vdet4

detection circuit

VC26, VC27

Vdet3 and Vdet4

detection circuit

Stop

Operating

VCC1 = VCC2 = 5V

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