参数资料
型号: MM908E622ACEK
厂商: Freescale Semiconductor
文件页数: 37/63页
文件大小: 0K
描述: IC HALF-BRIDGE QUAD 54-SOIC
标准包装: 26
应用: 自动镜像控制
核心处理器: HC08
程序存储器类型: 闪存(16 kB)
控制器系列: 908E
RAM 容量: 512 x 8
接口: SCI,SPI
输入/输出数: 12
电源电压: 9 V ~ 16 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 54-BSSOP(0.295",7.50mm 宽)裸露焊盘
包装: 管件
供应商设备封装: 54-SOICW-EP
Analog Integrated Circuit Device Data
42
Freescale Semiconductor
908E622
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
High Side Status Register (HSSTAT)
HSxOCF — High Side Over-current Flag Bit
This read/write flag is set by an over-current condition at
the high side drivers x. Clear HSxOCF and enable the HS
Driver by writing a logic [1] to HSxOCF. Writing a logic [0] to
HSxOCF has no effect. Reset clears the HSxOCF bit.
1 = over-current condition on high side drivers has
occurred
0 = no over-current condition on high side drivers has
occurred
HVDDOCF — HVDD Output Over-current Flag Bit
This read/write flag is set by an over-current condition at
the HVDD pin. Clear HVDDOCF and enable the output by
writing a logic [1] to the HVDDOCF Flag. Writing a logic [0] to
HVDDOCF has no effect. Reset clears the HVDDOCF bit.
1 = over-current condition on VDD output has occurred
0 = no over-current condition on VDD output has
occurred
Electrochrome Circuitry
The EC glass is controlled by two transistors. T1 switches
the EC glass on/off, and T2 controls the EC output voltage
given by the 6-Bit DA Converter.
Figure 25. EC Circuitry
EC Open Load Detection
Open Load can be detected by setting ECOLT. A small
current source sources a typical 200
μA on the EC pin, and
the voltage on the pin is measured. If the voltage is above the
typical 2.0 V (typical 10 k threshold), the ECOLF bit in the EC
Status and Control Register ECSCTL is set, indicating the
open load condition.
If the Open load circuitry is activated (ECOLT=1), the EC
glass is disabled.
EC Short-circuit Protection
The EC output is protected against shorts to VSUP. In
case of a short-circuit, the ECOCF in the EC Status and the
Control Register (ECSCTL) are set, and the EC circuitry is
disabled.
Register Name and Address: HSSTAT - $04
Bit7
6
5
4
3
2
1
Bit0
Read
HVDD
OCF
0
HS3O
CF
HS2O
CF
HS1O
CF
Write
Reset
0
VSUP
ECR
EC
GND
Control
EC output voltage
ECOCF
ECOL
ECOCF
On/Off
T1
T2
6Bit
DAC
ECON
ECRON
On/Off
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