ST7FLITEU09M6 STMicroelectronics, ST7FLITEU09M6 Datasheet - Page 53

• Manufacturer Part Number: ST7FLITEU09M6
• Description: MCU 8BIT SGL VOLT FLASH SO-8
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITEU09M6

• 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
• Eeprom Size: 128 x 8
• 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-SOIC (3.9mm Width)
• Processor Series: ST7FLITEUx
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: ICC
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST7FLITE-SK/RAIS, ST7FLITU0-D/RAIS, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 5 Channel
• Cpu Family: ST7
• Device Core Size: 8b
• Frequency (max): 8MHz
• Total Internal Ram Size: 128Byte
• # I/os (max): 5
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 3.3V
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SO N
• For Use With: 497-5858 - EVAL BOARD PLAYBACK ST7FLITE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Connectivity: -
• Lead Free Status / Rohs Status: Details

ST7LITEU05 ST7LITEU09
9.4
9.4.1
Caution:
Active-halt and Halt modes
Active-Halt and Halt modes are the two lowest power consumption modes of the MCU. They
are both entered by executing the ‘Halt’ instruction. The decision to enter either in Active-
Halt or Halt mode is given by the LTCSR/ATCSR register status as shown in the following
table:
Table 16.
Active-halt mode
Active-halt mode is the lowest power consumption mode of the MCU with a real time clock
available. It is entered by executing the ‘Halt’ instruction when active halt mode is enabled.
The MCU can exit Active-halt mode on reception of a Lite Timer / AT Timer interrupt or a
Reset.
●
●
When entering Active-Halt mode, the I bit in the CC register is cleared to enable interrupts.
Therefore, if an interrupt is pending, the MCU wakes up immediately.
In Active-halt mode, only the main oscillator and the selected timer counter (LT/AT) are
running to keep a wake-up time base. All other peripherals are not clocked except those
which get their clock supply from another clock generator (such as external or auxiliary
oscillator).
As soon as Active-halt is enabled, executing a HALT instruction while the Watchdog is active
does not generate a Reset if the WDGHalt bit is reset.
This means that the device cannot spend more than a defined delay in this power saving
mode.
Figure 25. Active-halt timing overview
LTCSR TBIE
When exiting Active-halt mode by means of a Reset, a 256 or 512 CPU cycle delay
occurs. After the start up delay, the CPU resumes operation by fetching the reset vector
which woke it up (see
When exiting Active-Halt mode by means of an interrupt, the CPU immediately
resumes operation by servicing the interrupt vector which woke it up (see
bit
0
0
0
1
x
Enabling/disabling Active-halt and Halt modes
ATCSR OVFIE
bit
x
0
1
x
1
[Active Halt Enabled]
Figure
INSTRUCTION
RUN
HALT
ATCSRCK1 bit ATCSRCK0 bit
ACTIVE
26).
HALT
1
0
x
x
x
256 OR 512 CPU
CYCLE DELAY
INTERRUPT
RESET
OR
1)
VECTOR
0
1
1
x
x
FETCH
RUN
Active-Halt mode disabled
Active-Halt mode enabled
Power saving modes
Meaning
Figure
53/139
26).