MC68HC05V12 Datasheet, PDF (106/246 Pages) Freescale Semiconductor, Inc – HCMOS Microcontreller Unit

Freescale Semiconductor, Inc.
Serial Peripheral Interface (SPI)
INTERNAL
MCU CLOCK
DIVIDER
÷ 2 ÷ 4 ÷ 16 ÷ 32
S
M
MSB
LSB
M
8-BIT SHIFT REG
S
READ DATA BUFF
SELECT
SPI CLOCK
(MASTER)
CLOCK
CLOCK
S
LOGIC
M
SPI CONTROL
MSTR
SPE
PB2/
MISO
PB3/
MOSI
PB1/
SCK
PB0/
SS
SPI STATUS REGISTER
SPI CONTROL REGISTER
SPI INTERRUPT
REQUEST
INTERNAL
DATA BUS
Figure 10-2. Serial Peripheral Interface Block Diagram
MASTER
8-BIT SHIFT REGISTER
MISO
MOSI
MISO
MOSI
SLAVE
8-BIT SHIFT REGISTER
SPI CLOCK
GENERATOR
SCK
SCK
Figure 10-3. Serial Peripheral Interface Master-Slave Interconnection
Technical Data
Serial Peripheral Interface (SPI)
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MC68HC05V12 — Rev. 2.0