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參數資料
型號: MC68HCP11A1CFN3
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Single-Chip Microcontroller
中文描述: 8-BIT, EEPROM, 3 MHz, MICROCONTROLLER, PQCC52
封裝: PLASTIC, LCC-52
文件頁數: 61/158頁
文件大小: 776K
代理商: MC68HCP11A1CFN3
MC68HC11A8
TECHNICAL DATA
SERIAL PERIPHERAL INTERFACE
MOTOROLA
6-3
6
6.3 Functional Description
Figure 6-2
shows a block diagram of the serial peripheral interface circuitry. When a
master device transmits data to a slave device via the MOSI line, the slave device re-
sponds by sending data to the master device via the master’s MISO line. This implies
full duplex transmission with both data out and data in synchronized with the same
clock signal. Thus, the byte transmitted is replaced by the byte received and eliminates
the need for separate transmit-empty and receiver-full status bits. A single status bit
(SPIF) is used to signify that the l/O operation has been completed.
The SPI is double buffered on read, but not on write. If a write is performed during data
transfer, the transfer occurs uninterrupted, and the write will be unsuccessful. This
condition will cause the write collision (WCOL) status bit in the SPSR to be set. After
a data byte is shifted, the SPIF flag of the SPSR is set.
Figure 6-2 Serial Peripheral Interface Block Diagram
In the master mode, the SCK pin is an output. It idles high or low, depending on the
CPOL bit in the SPCR, until data is written to the shift register, at which point eight
clocks are generated to shift the eight bits of data and then SCK goes idle again.
In a slave mode, the slave start logic receives a logic low at the SS pin and a clock
input at the SCK pin. Thus, the slave is synchronized with the master. Data from the
master is received serially at the slave MOSI line and loads the 8-bit shift register. After
the 8-bit shift register is loaded, its data is parallel transferred to the read buffer. During
a write cycle, data is written into the shift register, then the slave waits for a clock train
from the master to shift the data out on the slave’s MISO line.
PIN
CONTROL
LOGIC
MISO
PD2
DIVIDER
CLOCK
LOGIC
SPI STATUS (SPSR)
SPI BLOCK DIAGRAM
S
S
SPI CONTROL (SPCR)
D
M
C
C
S
S
S
W
M
8-BIT SHIFT REGISTER
READ DATA BUFFER
MSB
LSB
CLOCK
M
M
S
S
M
S
SELECT
÷
2
÷
4
÷
16
÷
32
INTERNAL
MCU SYSTEM
CLOCK
SPI CONTROL
S
S
MOSI
PD3
SCK
PD4
SS
PD5
M
S
D
MSTR
SPE
SPIE
SPI CLOCK (MSTR = 1)
8
SPI
INTERRUPT
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相關代理商/技術參數
參數描述
MC68HCP11A1FN 制造商:MOTORALA 功能描述:
MC68HCP11E0CP2 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HCP11E0FN 功能描述:MICROCONTROLLER MCU 8ADC 3MHC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC11 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設備:POR,PWM,溫度傳感器,WDT 輸入/輸出數:21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MC68HCP11E0FNE 功能描述:8位微控制器 -MCU 8B MCU 512RAM COP A/D RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
MC68HCP11E1CFNE2 功能描述:8位微控制器 -MCU 8B MCU 512 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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