參數(shù)資料
型號: MC68HC05L16CFU
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, QFP-80
文件頁數(shù): 115/146頁
文件大?。?/td> 852K
代理商: MC68HC05L16CFU
Simple Serial Peripheral Interface (SSPI)
MC68HC05L16 MC68HC705L16 Data Sheet, Rev. 4.1
70
Freescale Semiconductor
After 8-bit data is shifted in/out, SCK stops and SPIF is set. If SPIE is enabled, an interrupt request is
generated. The slave device in stop mode wakes up by this interrupt. Further transfers (writes to SPDR)
are inhibited while SPIF is a logic 1.
The master-slave basic interconnection is illustrated in Figure 8-1.
Figure 8-1. SSPI Master-Slave Interconnection
8.4 Internal Block Descriptions
This following paragraphs describe the main blocks in the SSPI module. (See Figure 8-2).
Figure 8-2. SSPI Block Diagram
SCK
SDI
SDO
SDI
SPDR
HFF
CLOCK
GENERATOR
SPDR
HFF
CLOCK
GENERATOR
MASTER DEVICE
SLAVE DEVICE
CONTROL LOGIC
SPSR
SPCR
SPDR
HFF
SDO
CLOCK GENERATOR
SCK
HC05 INTERNAL BUS
INTERRUPT
CONTROLS AND
ADDRESS BUS
DATA BUS
M
S
T
R
S
P
E
S
T
A
R
T
D
C
O
L
S
P
I
F
SDI
DORD
S
P
R
00 0
00 0 0 0 0
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