ST7LITE49K2 STMicroelectronics, ST7LITE49K2 Datasheet - Page 168
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ST7LITE49K2
Manufacturer Part Number
ST7LITE49K2
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST7LITE49K2.pdf
(245 pages)
Specifications of ST7LITE49K2
8 Kbytes Single Voltage Extended Flash (xflash) Program Memory With Read-out Protection In-circuit Programming And In-application Programming (icp And Iap) Endurance
10K write/erase cycles guaranteed Data retention
256 Bytes Data Eeprom With Read-out Protection. 300k Write/erase Cycles Guaranteed, Data Retention
20 years at 55 °C.
Clock Sources
Internal trimmable 8 MHz RC oscillator, auto-wakeup internal low power - low frequency oscillator, crystal/ceramic resonator or external clock
Five Power Saving Modes
Halt, Active-halt, Auto-wakeup from Halt, Wait and Slow
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On-chip peripherals
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SPI control/status register (SPICSR)
Reset Value: 0000 0000 (00h)
Bit 7 = SPIF Serial peripheral data transfer flag (Read only).
Bit 6 = WCOL Write collision status (Read only).
Bit 5 = OVR SPI overrun error (Read only).
Bit 4 = MODF Mode fault flag (Read only).
Bit 3 = Reserved, must be kept cleared.
Bit 2 = SOD SPI output disable.
SPIF
This bit is set by hardware when a transfer has been completed. An interrupt is
generated if SPIE = 1 in the SPICR register. It is cleared by a software sequence (an
access to the SPICSR register followed by a write or a read to the SPIDR register).
0: Data transfer is in progress or the flag has been cleared.
1: Data transfer between the device and an external device has been completed.
While the SPIF bit is set, all writes to the SPIDR register are inhibited until the SPICSR
register is read.
This bit is set by hardware when a write to the SPIDR register is done during a transmit
sequence. It is cleared by a software sequence (see Figure 75).
0: No write collision occurred
1: A write collision has been detected
This bit is set by hardware when the byte currently being received in the shift register is
ready to be transferred into the SPIDR register while SPIF = 1 (See Section Overrun
condition (OVR)). An interrupt is generated if SPIE = 1 in the SPICR register. The OVR
bit is cleared by software reading the SPICSR register.
0: No overrun error
1: Overrun error detected
This bit is set by hardware when the SS pin is pulled low in master mode (see Section
Master mode fault (MODF)). An SPI interrupt can be generated if SPIE = 1 in the
SPICR register. This bit is cleared by a software sequence (An access to the SPICSR
register while MODF = 1 followed by a write to the SPICR register).
0: No master mode fault detected
1: A fault in master mode has been detected
This bit is set and cleared by software. When set, it disables the alternate function of
the SPI output (MOSI in master mode / MISO in slave mode)
0: SPI output enabled (if SPE = 1)
1: SPI output disabled
7
WCOL
OVR
Read / Write (some bits Read only)
MODF
-
SOD
SSM
ST7LITE49K2
SSI
0
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