R8C/M11A Group, R8C/M12A Group

4. Electrical Characteristics

Specifications in this document are tentative and subject to change.

R01DS0010EJ0010 Rev.0.10

Page 31 of 45

Aug 25, 2010

Notes:

1. Vcc = 1.8 V to 5.5 V, Topr = -20

°C to 85 °C (N version)/-40 °C to 85 °C (D version), unless otherwise specified.

2. This enables the setting errors of bit rates such as 9600 bps and 38400 bps to be 0 % when the serial interface is used in

UART mode.

3. This indicates the precision error for the oscillation frequency of the high-speed on-chip oscillator.

Note:

1. Vcc = 1.8 V to 5.5 V, Topr = -20

°C to 85 °C (N version)/-40 °C to 85 °C (D version), unless otherwise specified.

Notes:

1. The measurement condition is Vcc = 1.8 V to 5.5 V and Topr = 25

°C.

2. Wait time until the internal power supply generation circuit stabilizes during power-on.

Table 4.10

High-Speed On-Chip Oscillator Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

—

High-speed on-chip oscillator frequency after

reset is cleared

Vcc = 5.0 V, Topr = 25

°CTBD

20

TBD

MHz

High-speed on-chip oscillator frequency

when the FR18S0 register adjustment value

is written into the FRV1 register and the

FR18S1 register adjustment value into the

FRV2 register (2)

TBD

18.432

TBD

MHz

High-speed on-chip oscillator frequency

dependence on temperature and power

supply voltage (3)

Vcc = 2.7 V to 5.5 V

-20

°C ≤ Topr ≤ 85 °C

TBD

—

TBD

%

Vcc = 2.7 V to 5.5 V

-40

°C ≤ Topr ≤ 85 °C

TBD

—

TBD

%

Vcc = 2.2 V to 5.5 V

-20

°C ≤ Topr ≤ 85 °C

TBD

—

TBD

%

Vcc = 2.2 V to 5.5 V

-40

°C ≤ Topr ≤ 85 °C

TBD

—

TBD

%

Vcc = 1.8 V to 5.5 V

-20

°C ≤ Topr ≤ 85 °C

TBD

—

TBD

%

Vcc = 1.8 V to 5.5 V

-40

°C ≤ Topr ≤ 85 °C

TBD

—

TBD

%

—

Oscillation stabilization time

Vcc = 5.0 V, Topr = 25

°C

—

100

450

µs

—

Self power consumption at oscillation

Vcc = 5.0 V, Topr = 25

°C

—

400

—

µA

Table 4.11

Low-Speed On-Chip Oscillator Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

fLOCO

Low-speed on-chip oscillator frequency

60

125

250

kHz

—

Oscillation stabilization time

Vcc = 5.0 V, Topr = 25

°C

—

10

100

µs

—

Self power consumption at oscillation

Vcc = 5.0 V, Topr = 25

°C—

2

—

µA

Table 4.12

Power Supply Circuit Timing Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

Time for internal power supply stabilization

during power-on (2)

—

—

2,000

µs