C8051F960-B-GM Datasheet, PDF (58/492 Pages) Silicon Laboratories – Ultra Low Power 128K, LCD MCU Family

C8051F96x
Table 4.4. Digital Supply Current with DC-DC Converter Disabled
–40 to +85 °C, 25 MHz system clock unless otherwise specified.
Parameter
Condition
Min Typ Max Unit
Digital Supply Current—Active Mode, No Clock Gating (PCLKACT=0x0F)
(CPU Active, fetching instructions from flash)
I_BAT ^{1, 2}
I_BAT Frequency 
Sensitivity^1,3,4
V_BAT = 1.8–3.8 V, F = 24.5 MHz
—
(includes precision oscillator current)
V_BAT = 1.8–3.8 V, F = 20 MHz
—
(includes low power oscillator current)
V_BAT = 1.8 V, F = 1 MHz
—
V_BAT = 3.8 V, F = 1 MHz
—
(includes external oscillator/GPIO current)
V_BAT = 1.8–3.8 V, F = 32.768 kHz
—
(includes SmaRTClock oscillator current)
—
V_BAT = 1.8–3.8 V, T = 25 °C
4.9 5.5 mA
3.9 —
mA
175 —
µA
190 —
µA
85 —
µA
183 — µA/MHz
Digital Supply Current—Active Mode, All Peripheral Clocks Disabled (PCLKACT=0x00)
(CPU Active, fetching instructions from flash)
I_BAT ^{1, 2}
V_BAT = 1.8–3.8 V, F = 24.5 MHz
— 3.9 —
mA
(includes precision oscillator current)
V_BAT = 1.8–3.8 V, F = 20 MHz
— 3.1 —
mA
(includes low power oscillator current)
V_BAT = 1.8 V, F = 1 MHz
— 165 —
µA
V_BAT = 3.8 V, F = 1 MHz
— 180 —
µA
(includes external oscillator/GPIO current)
I_BAT Frequency 
Sensitivity^{1, 3}
V_BAT = 1.8–3.8 V, T = 25 °C
— 140 — µA/MHz
Notes:
1. Active Current measure using typical code loop - Digital Supply Current depends upon the particular code
being executed. Digital Supply Current depends on the particular code being executed. The values in this
table are obtained with the CPU executing a mix of instructions in two loops: djnz R1, $, followed by a loop
that accesses an SFR, and moves data around using the CPU (between accumulator and b-register). The
supply current will vary slightly based on the physical location of this code in flash. As described in the Flash
Memory chapter, it is best to align the jump addresses with a flash word address (byte location /4), to
minimize flash accesses and power consumption.
2. Includes oscillator and regulator supply current.
3. Based on device characterization data; Not production tested.
4. Measured with one-shot enabled.
5. Low-Power Idle mode current measured with CLKMODE = 0x04, PCON = 0x01, and PCLKEN = 0x0F.
6. Using SmaRTClock osillator with external 32.768 kHz CMOS clock. Does not include crystal bias current.
7. Low-Power Idle mode current measured with CLKMODE = 0x04, PCON = 0x01, and PCLKEN = 0x00.
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Rev. 1.0