ST7FLITEUS5B6 STMicroelectronics, ST7FLITEUS5B6 Datasheet - Page 50

• Manufacturer Part Number: ST7FLITEUS5B6
• Description: MCU 8BIT 1KB FLASH 128KB 8-DIP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITEUS5B6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 5
• Program Memory Size: 1KB (1K 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)
• Controller Family/series: ST7
• No. Of I/o's: 5
• Ram Memory Size: 128Byte
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• For Use With: 497-6403 - BOARD EVAL 8BIT MICRO + TDE1708497-6407 - BOARD EVAL FOR VACUUM CLEANER497-5861 - EVAL BRD POWER MOSFET/8PIN MCU497-5858 - EVAL BOARD PLAYBACK ST7FLITE497-5515 - EVAL BOARD PHASE CTRL DIMMER497-5049 - KIT STARTER RAISONANCE ST7FLITE497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Other names: 497-5636-5

Power saving modes
8.4
50/136
Figure 20. Wait mode flowchart
1. 1. Before servicing an interrupt, the CC register is pushed on the stack. The I bit of the CC register is set
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 14.
LTCSR TBIE
during the interrupt routine and cleared when the CC register is popped.
bit
0
0
0
1
x
Enabling/disabling Active-halt and Halt modes
ATCSR OVFIE
WFI INSTRUCTION
N
bit
0
1
1
x
x
INTERRUPT
Y
ATCSRCK1 bit ATCSRCK0 bit
OR SERVICE INTERRUPT
FETCH RESET VECTOR
64 CPU CLOCK CYCLE
OSCILLATOR
PERIPHERALS
CPU
I BIT
OSCILLATOR
PERIPHERALS
CPU
I BIT
OSCILLATOR
PERIPHERALS
CPU
I BIT
N
1
0
x
x
x
DELAY
RESET
Y
OFF
OFF
X
ON
ON
ON
ON
ON
ON
ON
0
0
1)
0
x
1
x
1
Active-halt mode disabled
Active-halt mode enabled
ST7LITEUS2, ST7LITEUS5
Meaning