R8C/3MQ Group 5. Electrical Characteristics
R01DS0044EJ0200 Rev.2.00 Page 34 of 47
Jun 29, 2012
Note:
1. V
CC = 1.8 V to 3.6 V and Topr = −20°C to 85°C, unless otherwise specified.
Note:
1. V
CC = 1.8 V to 3.6 V and Topr = −20°C to 85°C, unless otherwise specified.
Notes:
1. The measurement condition is V
CC = 1.8 to 3.6 V and Topr = 25°C.
2. Waiting time until the internal power supply generation circuit stabilizes during power-on.
Notes:
1. V
CC = 1.8 V to 3.6 V and Topr = −20°C to 85°C, unless otherwise specified.
2. 1t
CYC = 1/f1(s)
Table 5.8 System Clock Low-Speed On-Chip Oscillator Circuit Electrical Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
fOCO-S Low-speed on-chip oscillator frequency 100 125 150 kHz
— Oscillation stability time — 30 100
µs
Table 5.9 Watchdog Timer Low-Speed On-Chip Oscillator Circuit Electrical Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
fOCO-WDT
Low-speed on-chip oscillator frequency 60 125 250 kHz
— Oscillation stability time — 30 100
µs
Table 5.10 Power Supply Circuit Timing Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
t
d(P-R) Time for internal power supply stabilization during
power-on
(2)
— — 2,000 µs
Table 5.11 Timing Requirements of Synchronous Serial Communication Unit (SSU)
(1)
Symbol Parameter Conditions
Standard
Unit
Min. Typ. Max.
t
SUCYC SSCK clock cycle time 4 — —
t
CYC
(2)
tHI SSCK clock “H” width 0.4 — 0.6 tSUCYC
tLO SSCK clock “L” width 0.4 — 0.6 tSUCYC
tRISE SSCK clock rising
time
Master — — 1
t
CYC
(2)
Slave — — 1 µs
t
FALL SSCK clock falling
time
Master — — 1
t
CYC
(2)
Slave — — 1 µs
t
SU SSO, SSI data input setup time 100 — — ns
t
H SSO, SSI data input hold time 1 — —
t
CYC
(2)
tLEAD
SCS setup time
Slave 1t
CYC + 50 — — ns
t
LAG
SCS hold time
Slave 1t
CYC + 50 — — ns
t
OD SSO, SSI data output delay time — — 1.5
t
CYC
(2)
tSA SSI slave access time 2.7 V ≤ VCC ≤ 3.6 V — — 1.5tCYC + 100 ns
1.8 V
≤ VCC < 2.7 V — — 1.5tCYC + 200 ns
t
OR SSI slave out open time 2.7 V ≤ VCC ≤ 3.6 V — — 1.5tCYC + 100 ns
1.8 V
≤ VCC < 2.7 V — — 1.5tCYC + 200 ns
