C8051F50X_11 Datasheet, PDF (41/313 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F50x/F51x
5.2. Electrical Characteristics
Table 5.2. Global Electrical Characteristics
–40 to +125 °C, 24 MHz system clock unless otherwise specified.
Parameter
Conditions
Min Typ Max
Supply Input Voltage (V_REGIN)
1.8 — 5.25
Digital Supply Voltage (V_DD) System Clock < 25 MHz
V_RST1 ^{— 2.75}
System Clock > 25 MHz
2
2.75
Analog Supply Voltage (VDDA) System Clock < 25 MHz
V_RST1 ^{— 2.75}
(Must be connected to V_DD) System Clock > 25 MHz
2
2.75
Digital Supply RAM Data
1.5
Retention Voltage
Port I/O Supply Voltage (V_IO) Normal Operation
1.8^{2 — 5.25}
SYSCLK (System Clock)³
0
— 50
T_SYSH (SYSCLK High Time)
9
——
T_SYSL (SYSCLK Low Time)
9
——
Specified Operating
Temperature Range
–40 — +125
Digital Supply Current—CPU Active (Normal Mode, fetching instructions from Flash)
I_DD4
V_DD = 2.1 V, F = 200 kHz
— 95 —
V_DD = 2.1 V, F = 1.5 MHz
— 700 —
V_DD = 2.1 V, F = 25 MHz
— 10 11
V_DD = 2.1 V, F = 50 MHz
— 19 21
Units
V
V
V
V
MHz
ns
ns
°C
µA
µA
mA
mA
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. 1.2
41