參數(shù)資料
型號(hào): EM78P451SWM
廠(chǎng)商: ELAN Microelctronics Corp .
英文描述: 8-Bit Microcontroller with OTP ROM
中文描述: 8位微控制器的OTP ROM的
文件頁(yè)數(shù): 23/54頁(yè)
文件大小: 421K
代理商: EM78P451SWM
EM78P451S
8-Bit Microcontroller with OTP ROM
Product Specification (V1.0) 06.01.2004
(This specification is subject to change without further notice)
19
4.5.2 SPI Function Description
Read
Write
SPIR
reg
SPIS
reg
shift right
bit 0
bit 7
Prescaler
4, 8, 16, 32, 64
SPIW
reg
P92/SDI
P93/SDO
P95/ /SS
P94/SCK
/
SS
Edge
Select
Edge
Select
SPIC bit6
Tsco
TMR1/2
SBR2~SBR0
8
Clock Select
2
Noise
Filter
SPIC
reg
SBR0 ~SBR2
RBF
RBFI
Buffer Full Detector
Set to 1
SE
Fig. 11 SPI Block Diagram
S
R
8
2 1 0
SPIC
S
(
7~0
SPIWB
SPI Shift Buffer
S
(
DATA BUS
FOSC
1 0
T1CON
6 4
SPIC
1 0
4
SPIS
SPIC
SPI
7
2
INTC
7~0
SPIRB
SDO
SDI
/
Shift Clock
Fig. 12 The Function Block Diagram of SPI Transmission
The following describes the function of each block and explains how to carry out the
SPI communication with the signals depicted in Fig.11 and Fig.12:
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