參數(shù)資料
型號(hào): M37512F8HHP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PQFP48
封裝: 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù): 20/87頁
文件大?。?/td> 879K
代理商: M37512F8HHP
Feb 18, 2005
page 27 of 85
REJ03B0122-0101
7512 Group
Function
In conformity with Philips I2C-BUS
standard:
10-bit addressing format
7-bit addressing format
High-speed clock mode
Standard clock mode
In conformity with Philips I2C-BUS
standard:
Master transmission
Master reception
Slave transmission
Slave reception
16.1 kHz to 400 kHz (at
φ = 4 MHz)
Table 7 Multi-master I2C-BUS interface functions
Item
Format
Communication mode
System clock
φ = f(XIN)/2 (high-speed mode)
φ = f(XIN)/8 (middle-speed mode)
MULTI-MASTER I2C-BUS INTERFACE
The multi-master I2C-BUS interface is a serial communications cir-
cuit, conforming to the Philips I2C-BUS data transfer format. This
interface, offering both arbitration lost detection and a synchronous
functions, is useful for the multi-master serial communications.
Figure 26 shows a block diagram of the multi-master I2C-BUS in-
terface and Table 7 lists the multi-master I2C-BUS interface
functions.
This multi-master I2C-BUS interface consists of the I2C address
register, the I2C data shift register, the I2C clock control register,
the I2C control register, the I2C status register, the I2C start/stop
condition control register and other control circuits.
When using the multi-master I2C-BUS interface, set 1 MHz or
more to
φ .
Note: Renesas Technology Corporation assumes no responsibility for in-
fringement of any third-party’s rights or originating in the use of the
connection control function between the I2C-BUS interface and the
ports SCL1, SCL2, SDA1 and SDA2 with the bit 6 of I2C control regis-
ter (002E16).
Fig. 26 Block diagram of multi-master I2C-BUS interface
: Purchase of Renesas Technology Corporation's I2C components conveys a license under the Philips I2C Patent Rights to use these components
an I2C system , provided that the system conforms to the I2C Standard Specification as defined by Philips.
SCL clock frequency
I2C address register
b7
b0
SAD6 SAD5
SAD4 SAD3 SAD2 SAD1 SAD0 RWB
Noise
elimination
circuit
Address comparator
b7
I2C data shift register
b0
Data
control
circuit
System
clock (
φ)
Interrupt
generating
circuit
Interrupt request signal
(IICIRQ)
b7
TRX BB
PIN
AAS AD0 LRB
b0
S1
b7
b0
TISS
10BIT
SAD
ALS
BC2 BC1
BC0
Bit counter
BB
circuit
Clock
control
circuit
Noise
elimination
circuit
b7
b0
ACK
BIT
FAST
MODE
CCR4 CCR3 CCR2 CCR1 CCR0
Internal data bus
Clock
division
S2
S0D
AL
circuit
ES0
SIS
I
2
C start/stop condition
control register
SIP SSC4 SSC3 SSC2 SSC1 SSC0
I2C clock control register
I2C status register
S2D
TSEL
S1D I C control register
2
Serial data
(SDA)
Serial
clock
(SCL)
AL
MST
S0
b7
b0
ACS
WEB TOF TOM
S3
SCF
I
2
C additional register
Operation status
selection
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