參數(shù)資料
型號: 73S1209F-44IMR/F/P
廠商: Maxim Integrated Products
文件頁數(shù): 71/123頁
文件大小: 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
標準包裝: 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
51
1.7.8
Analog Voltage Comparator
The 73S1209F includes a programmable comparator that is connected to the ANA_IN pin. The
comparator can be configured to trigger an interrupt if the input voltage rises above or falls below a
selectable threshold voltage. The comparator control register should not be modified when the analog
interrupt (ANAIEN bit in the INT6Ctl register) is enabled to guard against any false interrupt that might be
generated when modifying the threshold. The comparator has a built-in hysteresis to prevent the
comparator from repeatedly responding to low-amplitude noise. This hysteresis is approximately 20mV.
Interrupt control is handled in the INT6Ctl register.
Analog Compare Control Register (ACOMP): 0xFFD0
0x00
Table 55: The ACOMP Register
MSB
LSB
ANALVL
ONCHG
CPOL
CMPEN TSEL.2 TSEL.1 TSEL.0
Bit
Symbol
Function
ACOMP.7
ANALVL
When read, indicates whether the input level is above or below the
threshold. This is a real time value and is not latched, so it may change
from the time of the interrupt trigger until read.
ACOMP.6
-
ACOMP.5
ONCHG
If set, the Ana_interrupt is invoked on any change above or below the
threshold, bit 4 is ignored.
ACOMP.4
CPOL
If set = 1, Ana_interrupt is invoked when signal rises above selected
threshold. If set = 0, Ana_interrupt is invoked when signal goes below
selected threshold (default).
ACOMP.3
CMPEN
Enables power to the analog comparator. 1= Enabled. 0 = Disabled
(default).
ACOMP.2
TSEL.2
Sets the voltage threshold for comparison to the voltage on pin
ANA_IN. Thresholds are as follows:
TSEL.2
TSEL.1
TSEL.0
Voltage Threshold
0
1.00V
0
1
1.24V
0
1
0
1.40V
0
1
1.50V
1
0
1.75V
1
0
1
2.00V
1
0
2.30V
1
2.50V
ACOMP.1
TSEL.1
ACOMP.0
TSEL.0
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