參數(shù)資料
型號(hào): ATAM893T-TKQ
廠商: Atmel
文件頁(yè)數(shù): 64/98頁(yè)
文件大?。?/td> 0K
描述: IC MON TIRE-PRESS ATARX9X SER
標(biāo)準(zhǔn)包裝: 4,000
系列: MARC4
核心處理器: MARC4
芯體尺寸: 4-位
速度: 4MHz
連通性: SSI(2 線,3 線)
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 16
程序存儲(chǔ)器容量: 4KB(4K x 8)
程序存儲(chǔ)器類(lèi)型: EEPROM
EEPROM 大?。?/td> 64 x 16
RAM 容量: 256 x 4
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 6.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 20-SOIC(0.209",5.30mm 寬)
包裝: 帶卷 (TR)
67
4680C–4BMCU–01/05
ATAM893-D
Figure 5-44. MCL Bus Protocol 1
Bus not busy (1)
Both data and clock lines remain HIGH.
Start data transfer (2)
A HIGH to LOW transition of the SD line while the clock (SC)
is HIGH defines a START condition.
Stop data transfer (3)
A LOW to HIGH transition of the SD line while the clock (SC)
is HIGH defines a STOP condition.
Data valid (4)
The state of the data line represents valid data when,
after START condition, the data line is stable for the
duration of the HIGH period of the clock signal.
Acknowledge
All address and data words are serially transmitted to and
from the device in eight-bit words. The receiving device
returns a zero on the data line during the ninth clock cycle to
acknowledge word receipt.
Figure 5-45. MCL Bus Protocol 2
5.3.4.8
SSI Interrupt
The SSI interrupt INT3 can be generated either by an SSI buffer register status (i.e., transmit
buffer empty or receive buffer full), the end of SSI data telegram or on the falling edge of the
SC/SD pins on Port 4 (see P4CR). SSI interrupt selection is performed by the Interrupt Function
control bit (IFN). The SSI interrupt is usually used to synchronize the software control of the SSI
and inform the controller of the present SSI status. The Port 4 interrupts can be used together
with the SSI or, if the SSI itself is not required, as additional external interrupt sources. In either
case this interrupt is capable of waking the controller out of sleep mode.
To enable and select the SSI relevant interrupts use the SSI interrupt mask (SIM) and the Inter-
rupt Function (IFN) while the Port 4 interrupts are enabled by setting appropriate control bits in
P4CR register.
(2)
(1)
(4)
(3)
(1)
Start
condition
Data
valid
Data
change
Data
valid
Stop
condition
SC
SD
SC
SD
Start
1n8
9
1st Bit
8th Bit
ACK
Stop
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