MC68HC705C8ACFN Freescale Semiconductor, MC68HC705C8ACFN Datasheet - Page 148

IC MCU 4MHZ 8K OTP 44-PLCC

MC68HC705C8ACFN

Manufacturer Part Number
MC68HC705C8ACFN
Description
IC MCU 4MHZ 8K OTP 44-PLCC
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet

Specifications of MC68HC705C8ACFN

Core Processor
HC05
Core Size
8-Bit
Speed
2.1MHz
Connectivity
SCI, SPI
Peripherals
POR, WDT
Number Of I /o
24
Program Memory Size
8KB (8K x 8)
Program Memory Type
OTP
Ram Size
304 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-

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Serial Peripheral Interface (SPI)
11.7.3 Overrun Error
11.8 SPI Interrupts
11.9 SPI I/O Registers
Technical Data
148
Failing to read the byte in the SPDR before a subsequent byte enters the
shift register causes an overrun condition. In an overrun condition, all
incoming data is lost until software clears SPIF. The overrun condition
has no flag.
The SPIF bit in the SPSR indicates a byte has shifted into or out of the
SPDR. The SPIF bit is a source of SPI interrupt requests. The SPI
interrupt enable bit (SPIE) in the SPCR is the local mask for SPIF
interrupts.
The MODF bit in the SPSR indicates a mode error and is a source of SPI
interrupt requests. The MODF bit is set when a logic 0 occurs on the
PD5/SS pin while the MSTR bit is set. The SPI interrupt enable bit (SPIE)
in the SPCR is the local mask for MODF interrupts.
These input/output (I/O) registers control and monitor SPI operation:
Freescale Semiconductor, Inc.
For More Information On This Product,
– CPHA = 1 — A slave SPI can cause a write collision error by
SPI data register (SPDR)
SPI control register (SPCR)
SPI status register (SPSR)
writing to the SPDR while receiving a transmission, that is,
between the first active SCK edge and the end of the eighth
SCK cycle. The error does not affect the transmission from the
master SPI, but the byte that caused the error is lost.
Serial Peripheral Interface (SPI)
Go to: www.freescale.com
MC68HC705C8A — Rev. 3
MOTOROLA

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