ST10F273 datasheet(131/179 Pages) STMICROELECTRONICS

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ST10F273

Electrical characteristics

131/179

IPD2

Power down supply current(11) (12)

(RTC on, main oscillator on,

main voltage regulator off)

TA = 25°C

–

IPD3

Power down supply current (11)

(RTC on, 32 kHz oscillator on,

main voltage regulator off)

TA = 25°C

–

1.1

ISB1

Stand-by supply current (13)

(RTC off, oscillators off, VDD off, VSTBY on)

VSTBY = 5.5 V

TA = TJ = 25°C

–250

µA

VSTBY = 5.5 V

TA = TJ = 125°C

–500

µA

ISB2

Stand-by supply current (13)

(RTC on, 32kHz oscillator on, main VDD off,

VSTBY on)

VSTBY = 5.5 V

TA = 25°C

–250

µA

VSTBY = 5.5 V

TA = 125°C

–500

µA

ISB3

Stand-by supply current (13)(8)

(VDD transient condition)

––

2.5

This specification is not valid for outputs which are switched to open drain mode. In this case the respective output will float

and the voltage is imposed by the external circuitry.

Port 5 leakage values are granted for not selected A/D Converter channel. One channels is always selected (by default,

after reset, P5.0 is selected). For the selected channel the leakage value is similar to that of other port pins.

Consult your vendor to know which version of the on-chip oscillator amplifier is enabled (Low-Power or Wide-Swing).

The leakage of P2.0 is higher than other pins due to the additional logic (pass gates active only in specific test modes)

implemented on input path. Pay attention to not stress P2.0 input pin with negative overload beyond the specified limits:

failures in Flash reading may occur (sense amplifier perturbation). Refer to next Figure 35 for a scheme of the input

circuitry.

This specification is only valid during Reset, or during Hold- or Adapt-mode. Port 6 pins are only affected, if they are used

for CS output and the open drain function is not enabled.

The maximum current may be drawn while the respective signal line remains inactive.

The minimum current must be drawn in order to drive the respective signal line active.

The power supply current is a function of the operating frequency (fCPU is expressed in MHz). This dependency is

illustrated in the Figure 36 below. This parameter is tested at VDDmax and at maximum CPU clock frequency with all outputs

disconnected and all inputs at VIL or VIH, RSTIN pin at VIH1min: this implies I/O current is not considered. The device is

doing the following:

Fetching code from IRAM and XRAM1, accessing in read and write to both XRAM modules

Watchdog Timer is enabled and regularly serviced

RTC is running with main oscillator clock as reference, generating a tick interrupts every 192 clock cycles

Four channel of XPWM are running (waves period: 2, 2.5, 3 and 4 CPU clock cycles): no output toggling

Five General Purpose Timers are running in timer mode with prescaler equal to 8 (T2, T3, T4, T5, T6)

ADC is in Auto Scan Continuous Conversion mode on all 16 channels of Port5

All interrupts generated by XPWM, RTC, Timers and ADC are not serviced

Not 100% tested, guaranteed by design characterization.

The power supply current is a function of the operating frequency (fCPU is expressed in MHz). This dependency is

illustrated in the Figure 36 below. This parameter is tested at VDDmax and at maximum CPU clock frequency with all outputs

disconnected and all inputs at VIL or VIH, RSTIN pin at VIH1min: this implies I/O current is not considered. The device is

doing the following:

Fetching code from all sectors of IFlash, accessing in read (few fetches) and write to XRAM

Watchdog Timer is enabled and regularly serviced

RTC is running with main oscillator clock as reference, generating a tick interrupts every 192 clock cycles

Four channel of XPWM are running (waves period: 2, 2.5, 3 and 4 CPU clock cycles): no output toggling

Five General Purpose Timers are running in timer mode with prescaler equal to 8 (T2, T3, T4, T5, T6)

ADC is in Auto Scan Continuous Conversion mode on all 16 channels of Port5

All interrupts generated by XPWM, RTC, Timers and ADC are not serviced

Table 64.

DC characteristics (continued)

Symbol

Parameter

Test Condition

Limit Values

Unit

Min.

Max.

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