参数资料
型号: MC68HSC05C9AP
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PDIP40
封装: PLASTIC, DIP-40
文件页数: 154/160页
文件大小: 4128K
代理商: MC68HSC05C9AP
Serial Peripheral Interface
Functional Description
MC68HC05C9A Rev. 4.0
General Release Specification
Serial Peripheral Interface
NON-DISCLOSURE
AGREEMENT
REQUIRED
10.5 Functional Description
Figure 10-2 shows a block diagram of the serial peripheral interface
circuitry. When a master device transmits data to a slave via the MOSI
line, the slave device responds 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 receive-full status bits. A single
status bit (SPIF) is used to signify that the I/O operation has been
completed.
Figure 10-2. Serial Peripheral Interface Block Diagram
6
7
543210
SPE
SPIE
SPI CONTROL REGISTER (SPCR)
MSTR
CPOL
CPHA
SPR1
SPR2
$000A
WCOL
SPIF
SPI STATUS REGISTER (SPSR)
0
MODF
0
$000B
BIT 6
BIT 7
SPI DATA REGISTER (SPDR)
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
$000C
DWOM
00
SPI SHIFT REGISTER
DIVIDER
CLOCK
LOGIC
SPDR ($000C)
7 6 5 4 3 2 1 0
MODF
WCOL
SPIF
SPR1
SPR0
CPOL
CPHA
MSTR
SPE
SPIE
PD3/
MOSI
PD2/
MISO
÷ 2
÷ 32
÷ 16
÷ 4
SELECT
SPI
CONTROL
INTERNAL DATA BUS
MSTR
S
M
S
M
INTERNAL
CLOCK
(XTAL
÷2)
SPI CLOCK (MASTER)
SPI INTERRUPT REQUEST
SHIFT
CLOCK
PD4/
SCK
PD5/
SS
(SLAVE)
SPI
(MASTER)
CLOCK
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相关PDF资料
PDF描述
MC9S08RD32FG 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
MC9S08RG60CFG 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
MC68HC11E0VFU2 8-BIT, 2 MHz, MICROCONTROLLER, PQFP64
MC9S12DJ256VPV 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP112
MC68030RC40C 32-BIT, 40 MHz, MICROPROCESSOR, CPGA128
相关代理商/技术参数
参数描述
MC68HSC705C8ACFB 制造商:Rochester Electronics LLC 功能描述:8 BIT MCU, 304 BYTES RAM - Bulk
MC68HSC705C8ACP 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述:
MC68HSC705C8ACS 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HSC705J1ACDW 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HSC705J1ACP 制造商:Rochester Electronics LLC 功能描述:8 BIT MCU, 64 BYTES RAM - Bulk