R5F364AMDFB datasheet(48/92 Pages) RENESAS

48 / 92 page

R01DS0032EJ0200 Rev.2.00

Page 48 of 88

Feb 07, 2011

M16C/64A Group

5. Electrical Characteristics

Notes:

Necessary time until the voltage detector operates after setting to 1 again after setting the VC27 bit in the VCR2

Time from when passing the Vdet2 until when a voltage monitor 2 reset is generated.

Note:

To use the power-on reset function, enable voltage monitor 0 reset by setting the LVDAS bit in the OFS1 address

to 0. Also, set the VDSEL1 bit to 0 (Vdet0_2).

Figure 5.3

Power-On Reset Circuit Electrical Characteristics

Table 5.13

Voltage Detector 2 Electrical Characteristics

The measurement condition is VCC1 = 2.7 to 5.5 V, Topr = -20°C to 85°C/-40°C to 85°C, unless otherwise specified.

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

Vdet2

Voltage detection level Vdet2_0

When VCC1 is falling

3.50

4.00

4.50

Hysteresis width at the rising of VCC1 in voltage

detector 2

0.15

Voltage detector 2 response time (2)

When VCC1 falls from 5

V to (Vdet2_0 - 0.1) V

200

μs

Voltage detector self power consumption

VC27 = 1, VCC1 = 5.0 V

1.8

μA

td(E-A)

Waiting time until voltage detector operation starts (1)

100

μs

Table 5.14

Power-On Reset Circuit

The measurement condition is VCC1 = 2.0 to 5.5 V, Topr = -20°C to 85°C/ -40°C to 85°C, unless otherwise specified.

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

Vpor1

Voltage at which power-on reset enabled (1)

0.1

trth

External power VCC1 rise gradient

2.0

50000 mV/ms

tw(por)

Time necessary to enable power-on reset

300

Vpor1

Internal

reset signal

Voltage detection 0

circuit response time

fOCO-S

× 32

VCC1

(1)

det0

t rth

tw(por)

t rth

(1)

det0

fOCO-S

× 32

Note:

Vdet0 indicates the voltage detection level of the voltage detection 0 circuit.

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