ST7FLITEU05B6 STMicroelectronics, ST7FLITEU05B6 Datasheet - Page 51

• Manufacturer Part Number: ST7FLITEU05B6
• Description: MCU 8BIT SGL VOLT FLASH 8-DIP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITEU05B6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 5
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Processor Series: ST7FLITEUx
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: ICC
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Development Tools By Supplier: ST7FUS-PRIMER, ST7FLITE-SK/RAIS, ST7FLITU0-D/RAIS, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 5 Channel
• For Use With: 497-5858 - EVAL BOARD PLAYBACK ST7FLITE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

ST7LITEU05 ST7LITEU09
9
9.1
9.2
Note:
Power saving modes
Introduction
To give a large measure of flexibility to the application in terms of power consumption, four
main power saving modes are implemented in the ST7 (see
●
●
●
●
●
After a Reset the normal operating mode is selected by default (RUN mode). This mode
drives the device (CPU and embedded peripherals) by means of a master clock which is
based on the main oscillator frequency (f
From RUN mode, the different power saving modes may be selected by setting the relevant
register bits or by calling the specific ST7 software instruction whose action depends on the
oscillator status.
Figure 22. Power saving mode transitions
Slow mode
This mode has two targets:
●
●
Slow mode is controlled by the SMS bit in the MCCSR register which enables or disables
Slow mode.
In this mode, the oscillator frequency is divided by 32. The CPU and peripherals are clocked
at this lower frequency.
Slow-Wait mode is activated when entering Wait mode while the device is already in Slow
mode.
Slow
Wait (and Slow-Wait)
Active-halt
Auto-wakeup from Halt (AWUFH)
Halt
To reduce power consumption by decreasing the internal clock in the device,
To adapt the internal clock frequency (f
ACTIVE HALT
SLOW Wait
POWER CONSUMPTION
SLOW
HALT
RUN
OSC
Wait
CPU
).
Low
High
) to the available supply voltage.
Figure
22):
Power saving modes
51/139