Datasheet

R01DS0060EJ0160 Rev.1.60 Page 111 of 154
May 19, 2014
RX630 Group 5. Electrical Characteristics
Note 1. When using a sub-clock, ask the manufacturer of the oscillator to evaluate its oscillation. Refer to the results of evaluation
provided by the manufacturer for the oscillation stabilization time.
Note 2. The minimum and maximum values for sub-clock oscillation stabilization waiting offset time (t
SUBOSCWT0
) only apply to products
tagged with “*
1
” in Figure 1.3, List of Products. For other products, take the value of (t
SUBOSCWT0
) to be 0.
Note 3. The number of cycles n selected by the value of the SOSCWTCR.SSTS[4:0] bits determines the sub-clock oscillation
stabilization waiting time in accord with the formula below.
The notation “max(t
SUBOSC
, t
SUBOSCWT0
)“ indicates whichever is higher of t
SUBOSC
and t
SUBOSCWT0
.
Figure 5.3 BCLK Pin Output Timing
Figure 5.4 EXTAL External Clock Input Timing
Table 5.12 Clock Timing (Sub-Clock Related)
Conditions: VCC = AVCC0 = VREFH = VCC_USB = 2.7 to 3.6 V, VREFH0 = 2.7 V to AVCC0, V
BATT
= 2.3 to 3.6 V,
VSS = AVSS0 = VREFL/VREFL0 = VSS_USB = 0 V, T
a
= T
opr
Item Symbol Min. Typ. Max. Unit
Test
Conditions
Sub-clock oscillator oscillation frequency f
SUB
— 32.768 — kHz
Sub-clock oscillation stabilization time t
SUBOSC
—— *
1
s Figure 5.12
Sub-clock oscillation stabilization wait offset time*
2
t
SUBOSCWT0
1.8 — 2.6 s
Sub-clock oscillation stabilization waiting time t
SUBOSCWT
—— *
2
s
t
SUBOSCWT
n
f
SUB
max (t
SUBOSC,
t
SUBOSCWT0
)
=
+
t
Cf
t
CH
t
Bcyc
t
Cr
t
CL
BCLK pin output
Test conditions: VOH = VCC × 0.7, VOL = VCC × 0.3, IOH = –1.0 mA, IOL = 1.0 mA, C = 30 pF
t
EXH
t
EXcyc
EXTAL external clock input
VCC × 0.5
t
EXL
t
EXr
t
EXf