ST7FLITE49K2T6 STMicroelectronics, ST7FLITE49K2T6 Datasheet - Page 34

• Manufacturer Part Number: ST7FLITE49K2T6
• Description: IC MCU 8BIT 8K FLASH 32LQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITE49K2T6

• 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

Central processing unit
6.3.1
6.3.2
6.3.3
6.3.4
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Accumulator (A)
The Accumulator is an 8-bit general purpose register used to hold operands and the results
of the arithmetic and logic calculations and to manipulate data.
Index registers (X and Y)
In indexed addressing modes, these 8-bit registers are used to create either effective
addresses or temporary storage areas for data manipulation. (The Cross-Assembler
generates a precede instruction (PRE) to indicate that the following instruction refers to the
Y register.)
The Y register is not affected by the interrupt automatic procedures (not pushed to and
popped from the stack).
Program counter (PC)
The Program Counter is a 16-bit register containing the address of the next instruction to be
executed by the CPU. It is made of two 8-bit registers PCL (Program Counter low which is
the LSB) and PCH (Program Counter high which is the MSB).
Condition code register (CC)
The 8-bit Condition Code register contains the interrupt mask and four flags representative
of the result of the instruction just executed. This register can also be handled by the PUSH
and POP instructions.
Reset value: 111x 1xxx
These bits can be individually tested and/or controlled by specific instructions.
Arithmetic management bits
Bit 4 = H Half carry bit
This bit is set by hardware when a carry occurs between bits 3 and 4 of the ALU during
an ADD or ADC instruction. It is reset by hardware during the same instructions.
0: No half carry has occurred.
1: A half carry has occurred.
This bit is tested using the JRH or JRNH instruction. The H bit is useful in BCD
arithmetic subroutines.
7
1
1
I1
H
Read/write
I0
N
Z
ST7LITE49K2
C
0