ST7FLITE49K2T6TR STMicroelectronics, ST7FLITE49K2T6TR Datasheet - Page 44

• Manufacturer Part Number: ST7FLITE49K2T6TR
• Description: IC MCU 8BIT 8K FLASH 32LQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITE49K2T6TR

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Processor Series: ST7FLITE4x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 384 B
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST7FLITE-SK/RAIS, ST7FLI49M-D/RAIS, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 10 Channel
• For Use With: 497-8399 - BOARD EVAL ST7LITE49M/STLED316S497-5858 - EVAL BOARD PLAYBACK ST7FLITE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Supply, reset and clock management
Caution:
44/245
When the ST7 is unprogrammed or fully erased, the Flash is blank and the Reset vector is
not programmed. For this reason, it is recommended to keep the RESET pin in low state
until programming mode is entered, in order to avoid unwanted behavior.
The 256 CPU clock cycle delay allows the oscillator to stabilize and ensures that recovery
has taken place from the Reset state. The shorter or longer clock cycle delay is
automatically selected depending on the clock source chosen by option byte.
The Reset vector fetch phase duration is 2 clock cycles.
Table 7.
Figure 14. Reset sequence phases
External Crystal/Ceramic Oscillator (connected to OSC1/OSC2 pins)
External Crystal/Ceramic 1-16 MHz Oscillator
External clock (connected to CLKIN/PB1 pin)
External Crystal/Ceramic 32 kHz Oscillator
CPU clock delay during Reset sequence
Internal RC 32 kHz Oscillator
Internal RC 8 MHz Oscillator
active phase
Clock source
256 or 4096 clock cycles
RESET
Internal reset
vector
Fetch
CPU clock cycle delay
4096
4096
4096
4096
256
256
ST7LITE49K2