R8C2K datasheet(426/471 Pages) RENESAS

426 / 471 page

R8C/2K Group, R8C/2L Group

22. Electrical Characteristics

Rev.1.10

Dec 21, 2007

Page 409 of 450

REJ09B0406-0110

NOTES:

VCC = 2.2 to 5.5 V, Topr =

−20 to 85°C (N version) / −40 to 85°C (D version), unless otherwise specified.

These standard values show when the FRA1 register value after reset is assumed.

These standard values show when the corrected value of the FRA6 register is written to the FRA1 register.

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:

VCC = 2.2 to 5.5 V, Topr =

−20 to 85°C (N version) / −40 to 85°C (D version), unless otherwise specified.

NOTES:

The measurement condition is VCC = 2.2 to 5.5 V and Topr = 25

°C.

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

Time until system clock supply starts after the interrupt is acknowledged to exit stop mode.

Table 22.10

High-speed On-Chip Oscillator Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

fOCO40M

High-speed on-chip oscillator frequency

temperature • supply voltage dependence

VCC = 2.7 V to 5.5 V

−20°C ≤ Topr ≤ 85°C(2)

39.2

40.8

MHz

VCC = 2.7 V to 5.5 V

−40°C ≤ Topr ≤ 85°C(2)

39.0

41.0

MHz

VCC = 2.2 V to 5.5 V

−20°C ≤ Topr ≤ 85°C(3)

35.2

44.8

MHz

VCC = 2.2 V to 5.5 V

−40°C ≤ Topr ≤ 85°C(3)

34.0

46.0

MHz

High-speed on-chip oscillator frequency when

correction value in FRA7 register is written to

FRA1 register(4)

VCC = 5.0 V, Topr = 25

°C

−

36.864

−

MHz

VCC = 2.7 V to 5.5 V

−20°C ≤ Topr ≤ 85°C

−3%

−

Value in FRA1 register after reset

08h

−

F7h

−

Oscillation frequency adjustment unit of high-

speed on-chip oscillator

Adjust FRA1 register

(value after reset) to -1

−

+0.3

−

MHz

−

Oscillation stability time

VCC = 5.0 V, Topr = 25

°C

−

100

µs

−

Self power consumption at oscillation

VCC = 5.0 V, Topr = 25

°C

−

550

−µA

Table 22.11

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

−

100

µs

−

Self power consumption at oscillation

VCC = 5.0 V, Topr = 25

°C

−

−µA

Table 22.12

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

td(R-S)

STOP exit time(3)

−−

150

µs

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