Preliminary document
Specifications in this document are tentative and subject to change.
Under development
R8C/34W Group, R8C/34X Group, R8C/34Y Group, R8C/34Z Group
5. Electrical Characteristics
Table 5.11
High-speed On-Chip Oscillator Circuit Electrical Characteristics
Standard
Symbol
Parameter
Condition
Unit
Min.
Typ.
40
Max.
−
High-speed on-chip oscillator frequency after
reset
VCC = 2.7 V to 5.5 V,
−40°C ≤ Topr ≤ 85°C (J version) /
−
−
MHz
−40°C ≤ Topr ≤ 125°C (K version)
High-speed on-chip oscillator frequency when
the FRA4 register correction value is written
into the FRA1 register and the FRA5 register
−
−
36.864
−
−
5
MHz
MHz
%
(3)
correction value into the FRA3 register
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
32
High-speed on-chip oscillator frequency
−5
−
(2)
temperature • supply voltage dependence
−
−
Oscillation stabilization time
−
−
200
400
−
−
µs
Self power consumption at oscillation
VCC = 5.0 V, Topr = 25°C
µA
Notes:
1. The measurement condition is VCC = 2.7 to 5.5 V and Topr = −40 to 85°C (J version) / −40 to 125°C (K version).
2. This indicates the precision error for the oscillation frequency of the high-speed on-chip oscillator.
3. 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.
Table 5.12
Low-speed On-Chip Oscillator Circuit Electrical Characteristics
Standard
Typ.
Symbol
fOCO-S
Parameter
Condition
Unit
Min.
112.5
112.5
Max.
137.5
137.5
Low-speed on-chip oscillator frequency
125
kHz
kHz
fOCO-WDT Low-speed on-chip oscillator frequency for watchdog
timer
125
−
−
Oscillation stabilization time
VCC = 5.0 V, Topr = 25°C
VCC = 5.0 V, Topr = 25°C
−
−
30
3
100
µs
Self power consumption at oscillation
−
µA
Note:
1. The measurement condition is VCC = 2.7 to 5.5 V and Topr = −40 to 85°C (J version) / −40 to 125°C (K version).
Table 5.13
Power Supply Circuit Timing Characteristics
Standard
Typ. Max.
2000
Symbol
Parameter
Condition
Unit
Min.
td(P-R)
Time for internal power supply stabilization during
−
−
µs
(2)
power-on
Notes:
1. The measurement condition is VCC = 2.7 to 5.5 V and Topr = −40 to 85°C (J version) / −40 to 125°C (K version).
2. Wait time until the internal power supply generation circuit stabilizes during power-on.
REJ03B0312-0010 Rev.0.10
Apr 09, 2010
Page 52 of 67
RENESAS [ RENESAS TECHNOLOGY CORP ]
