参数资料
型号: SC9RS08KA1J3CDB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDSO6
封装: 3 X 3 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, DFN-6
文件页数: 120/134页
文件大小: 3114K
代理商: SC9RS08KA1J3CDB
Analog Comparator (RS08ACMPV1)
SC9RS08KA2 Series Data Sheet, Rev. 1
86
Freescale Semiconductor
10.2
External Signal Description
The ACMP has two analog input pins, ACMP+ and ACMP–, and one digital output pin, ACMPO. Each
of the input pins can accept an input voltage that varies across the full operating voltage range of the MCU.
As shown in Figure 10-2, the ACMP– pin is connected to the inverting input of the comparator, and the
ACMP+ pin is connected to the non-inverting input of the comparator if ACBGS=0. As shown in
Figure 10-2, the ACMPO pin can be enabled to drive an external pin.
The signal properties of ACMP are shown in Table 10-1.
10.3
Register Definition
The ACMP includes one register:
An 8-bit status and control register
Refer to the direct-page register summary in the memory chapter of this data sheet for the absolute address
assignments for all ACMP registers.
10.3.1
ACMP Status and Control Register (ACMPSC)
ACMPSC contains the status flag and control bits which are used to enable and configure the ACMP.
Table 10-1. Signal Properties
Signal
Function
I/O
ACMP-
Inverting analog input to the ACMP
(Minus input)
I
ACMP+
Non-inverting analog input to the ACMP
(Positive input)
I
ACMPO
Digital output of the ACMP
O
765
43
210
R
ACME
ACBGS
ACF
ACIE
ACO
ACOPE
ACMOD
W
Reset:
00
000
0
= Unimplemented
Figure 10-3. ACMP Status and Control Register (ACMPSC)
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