R8C datasheet(34/50 Pages) RENESAS

34 / 50 page

REJ03B0320-0010 Rev.0.10

Page 34 of 47

Jul 12, 2010

R8C/3JT Group

5. Electrical Characteristics

Under development Preliminary document

Specifications in this document are tentative and subject to change.

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.

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

Table 5.10

High-speed On-Chip Oscillator Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

—

High-speed on-chip oscillator frequency after reset

Vcc = 1.8 V to 5.5 V

−20°C ≤ Topr ≤ 85°C

TBD

MHz

Vcc = 1.8 V to 5.5 V

−40°C ≤ Topr ≤ 85°C

TBD

MHz

High-speed on-chip oscillator frequency when the

FRA4 register correction value is written into the

FRA1 register and the FRA5 register correction

value into the FRA3 register (2)

Vcc = 1.8 V to 5.5 V

−20°C ≤ Topr ≤ 85°C

TBD

36.864

TBD

MHz

Vcc = 1.8 V to 5.5 V

−40°C ≤ Topr ≤ 85°C

TBD

36.864

TBD

MHz

High-speed on-chip oscillator frequency when the

FRA6 register correction value is written into the

FRA1 register and the FRA7 register correction

value into the FRA3 register

Vcc = 1.8 V to 5.5 V

−20°C ≤ Topr ≤ 85°C

TBD

MHz

Vcc = 1.8 V to 5.5 V

−40°C ≤ Topr ≤ 85°C

TBD

MHz

—

Oscillation stability time

Vcc = 5.0 V, Topr = 25

°C—

0.5

—

Self power consumption at oscillation

Vcc = 5.0 V, Topr = 25

°C

—

400

—

µA

Table 5.11

Low-speed On-Chip Oscillator Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

fOCO-S

Low-speed on-chip oscillator frequency

125

250

kHz

—

Oscillation stability time

Vcc = 5.0 V, Topr = 25

°C

—

100

µs

—

Self power consumption at oscillation

Vcc = 5.0 V, Topr = 25

°C—

—

µA

Table 5.12

Power Supply Circuit Timing Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

td(P-R)

Time for internal power supply stabilization during

power-on (2)

—

2000

µs

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