C8051F50X Datasheet, PDF (43/312 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F50x-F51x
Table 5.2. Global Electrical Characteristics (Continued)
–40 to +125 °C, 24 MHz system clock unless otherwise specified.
Parameter
Conditions
Min Typ Max Units
Digital Supply Current—CPU Inactive (Idle Mode, not fetching instructions from Flash)
I_DD4
V_DD = 2.1 V, F = 200 kHz
— 60 —
µA
V_DD = 2.1 V, F = 1.5 MHz
— 460 —
µA
V_DD = 2.1 V, F = 25 MHz
— 7.2 8.0 mA
V_DD = 2.1 V, F = 50 MHz
— 14 16
mA
I_DD4
V_DD = 2.6 V, F = 200 kHz
— 75 —
µA
V_DD = 2.6 V, F = 1.5 MHz
— 600 —
µA
V_DD = 2.6 V, F = 25 MHz
— 9.3 15
mA
V_DD = 2.6 V, F = 50 MHz
— 19 25
mA
I_DD Supply Sensitivity⁴
F = 25 MHz
F = 1 MHz
— 57 —
%/V
— 56 —
I_DD Frequency Sensitivity ^4.6
V_DD = 2.1V, F < 12.5 MHz, T = 25 °C —
V_DD = 2.1V, F > 12.5 MHz, T = 25 °C —
V_DD = 2.6V, F < 12.5 MHz, T = 25 °C —
0.29
0.29
0.38
—
—
mA/MHz
—
V_DD = 2.6V, F > 12.5 MHz, T = 25 °C — 0.38 —
Digital Supply Current⁴
(Stop or Suspend Mode)
Oscillator not running,
V_DD Monitor Disabled
Temp = 25 °C
—
2
—
µA
Temp = 60 °C
— 10 —
Temp= 125 °C
— 120 —
Notes:
1. Given in Table 5.4 on page 46.
2. V_IO should not be lower than the V_DD voltage.
3. SYSCLK must be at least 32 kHz to enable debugging.
4. Based on device characterization data; Not production tested. Does not include oscillator supply current.
5. IDD can be estimated for frequencies < 12.5 MHz by simply multiplying the frequency of interest by the
frequency sensitivity number for that range. When using these numbers to estimate I_DD for >12.5 MHz, the
estimate should be the current at 50 MHz minus the difference in current indicated by the frequency
sensitivity number. For example: V_DD = 2.6 V; F = 20 MHz, I_DD = 26 mA - (50 MHz -
20 MHz) * 0.48 mA/MHz = 11.6 mA.
6. Idle IDD can be estimated for frequencies < 1 MHz by simply multiplying the frequency of interest by the
frequency sensitivity number for that range. When using these numbers to estimate Idle I_DD for >1 MHz, the
estimate should be the current at 50 MHz minus the difference in current indicated by the frequency
sensitivity number. 
For example: V_DD = 2.6 V; F = 5 MHz, Idle I_DD = 21 mA – (50 MHz – 5 MHz) x 0.41 mA/MHz = 2.6 mA.
Rev. 1.1
43