2C write mode. C write " />
參數(shù)資料
型號: 73S1209F-44IMR/F/P
廠商: Maxim Integrated Products
文件頁數(shù): 75/123頁
文件大?。?/td> 0K
描述: IC SMART CARD READER PROG 44-QFN
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 2,500
系列: 73S12xx
核心處理器: 80515
芯體尺寸: 8-位
速度: 24MHz
連通性: I²C,智能卡,UART/USART
外圍設(shè)備: LED,POR,WDT
輸入/輸出數(shù): 9
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-VFQFN 裸露焊盤
包裝: 帶卷 (TR)
DS_1209F_004
73S1209F Data Sheet
Rev. 1.2
55
Figure 9 shows the timing of the I
2C write mode.
C write mode.
1-7
8
9
10-17
18
ACK bit
STOP
condition
START
condition
1-7
8
9
10-17
18
ACK bit
STOP
condition
START
condition
SCL
SDA
LSB
MSB
LSB
MSB
Device Address
[7:0]
Write Data [7:0
I2C_Interrupt
Start I2C
(CSR bit1)
Transfer length
(CSR bit0)
1-7
8
9
10-17
18
ACK bit
STOP
condition
START
condition
SCL
SDA
LSB
MSB
LSB
MSB
Device Address
[7:0]
Write Data [7:0]
I2C_Interrupt
Start I2C
(CSR bit1)
Transfer length
(CSR bit0)
Secondary Write
Data [7:0]
ACK bit
19-26
27
LSB
MSB
Figure 9: I
2C Write Mode Operation
1.7.10.2 I2C Read Sequence
To read data on the I
2C Master Bus from a slave device, the 80515 has to program the following registers
in this sequence:
1. Write slave device address to Device Address register (DAR). The data contains 7 bits device
address and 1 bit of op-code. The op-code bit should be written with a 1.
2. Write control data to Control and Status register (CSR). Write a 1 to bit 1 to start I
2C Master Bus.
Also write a 1 to bit 0 if the Secondary Read Data register (SRDR) is to be captured from the I
2C
Slave device.
3. Wait for I
2C interrupt to be asserted. It indicates that the read operation on the I2C bus is done.
Refer to information about the INT6Ctl, IEN1 and IRCON registers for masking and flag operation.
4. Read data from the Read Data register (RDR).
5. Read data from Secondary Read Data register (SRDR) if bit 0 of Control and Status register (CSR) is
written with a 1.
相關(guān)PDF資料
PDF描述
73S1209F-44IM/F/P IC SMART CARD READER PROG 44-QFN
AKSPT-G-BLU-R CONN SHUNT 2.54MM GOLD 6.0MM BLU
AKSNT-Z-RED-R CONN SHUNT 2.54MM TIN 4.5MM RED
AKSNT-Z-BLUE-R CONN SHUNT 2.54MM TIN 4.5MM BLUE
EDJ4G0 SHUNT .100" BLACK W/HANDLE
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