OPERATIONAL MODES Hall-effect Sensor Input" />
參數(shù)資料
型號(hào)： MM908E621ACDWB
廠商： Freescale Semiconductor
文件頁數(shù)： 27/60頁
文件大?。?/td> 0K
描述： IC QUAD HALF BRDG TRPL SW 54SOIC
標(biāo)準(zhǔn)包裝： 26
應(yīng)用： 自動(dòng)鏡像控制
核心處理器： HC08
程序存儲(chǔ)器類型： 閃存（16 kB）
控制器系列： 908E
RAM 容量： 512 x 8
接口： SCI，SPI
輸入/輸出數(shù)： 12
電源電壓： 9 V ~ 16 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 54-BSSOP（0.295"，7.50mm 寬）裸露焊盤
包裝： 管件
供應(yīng)商設(shè)備封裝： 54-SOICW-EP
Analog Integrated Circuit Device Data
Freescale Semiconductor
33
908E621
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Hall-effect Sensor Input Pin H0
The H0 pin can be configured as general purpose input
(H0MS = 0) or as hall-effect sensor input (H0MS = 1) to be
able to read 3-pin / 2-pin hall sensors or switches.
Figure 18. General purpose / Hall-effect Sensor Input (H0)
Current Coded Hallsensor Input
H0 is selected as “2-pin Hall-sensor input”, if the
corresponding H0MS bit in the H0/L0 Status and Control
Register (HLSCTL) is set. In this mode, the pin current to
GND is monitored by a special sense circuitry. Setting the
H0EN bit in the H0/L0 Status and Control Register, switches
the output to VSUP and enables the sense circuitry. The
result of the sense operation is given by the H0F flag. The
flag is low if the sensed current is higher than the sense
current threshold IHSCT. In this configuration, the HO pin is
protected (current limitation) against short-circuit to GND.
After switching on the hallport (H0EN = “1”), the Hall-
sensor needs some time to stabilize the output. In RUN
mode, the software has to take care about waiting for a few
s (40) before sensing the hall-flags.
The hall-port output current is sensed. In case of an over-
current (short to GND), the hall-port over-current flag
(H0OCF) is set and the current is limited. For proper
operation of the current limitation, an external capacitor
(>100 nF) close to the H0 pin is required.
1000
Chip temperature
1001
VSUP prescaler
1010
Pin A0
1011
Pin A0CST
1100
not used
1101
not used
1110
not used
1111
not used
SS3
SS2
SS1
SS0
Channel
Current
Sense
H0EN
VSUP
H0EN
H0F
H0MS
VDD
10k
H0
H0PD
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MM908E621ACDWB/R2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Quad Half-bridge and Triple High Side with Embedded MCU and LIN for High End Mirror
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MM908E621ACPEK 功能描述:8位微控制器 -MCU QUAD H-B/3-HS W/MCU & LI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MM908E621ACPEKR2 功能描述:8位微控制器 -MCU QUAD HB AND TRIPLE HS RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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