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78M6618-IM 参数 Datasheet PDF下载

78M6618-IM图片预览
型号: 78M6618-IM
PDF下载: 下载PDF文件 查看货源
内容描述: 八通道功率和电能测量IC [Octal Power and Energy Measurement IC]
分类和应用:
文件页数/大小: 32 页 / 421 K
品牌: TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
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78M6618 Data Sheet  
DS_6618_005  
4.3 Digital Pins  
Table 28: Digital Pins  
Name  
Type Circuit  
Description  
COM1,COM0  
O
5
LCD Common Outputs: These 2 pins provide the select signals for an  
LCD display.  
DIO3  
I/O  
O
3,4  
5
Dedicated DIO pin.  
Dedicated LCD Segment Output pins.  
SEG0…SEG2,  
SEG7, SEG8  
SEG12,  
SEG14…SEG18  
Multi-use pins, configurable as either LCD SEG driver or DIO.  
(DIO4 = SCK, DIO5 = SDA when configured as EEPROM interface;  
WPULSE = DIO6, VARPULSE = DIO7 when configured as pulse  
outputs). If unused, these pins must be configured as DIOs and  
set to outputs by the firmware.  
SEG24/DIO4…  
SEG31/DIO11,  
SEG33/DIO13…  
SEG39/DIO19,  
SEG63/DIO43  
I/O  
I/O  
3, 4, 5  
3, 4, 5  
Multi-use pins, configurable as either LCD SEG driver or SPI PORT.  
SEG3/PCLK  
SEG4/PSDO  
SEG5/PCSZ  
SEG6/PSDI  
Multi-use pins, configurable as either emulator port pins (when ICE_E  
pulled high) or LCD SEG drivers (when ICE_E tied to GND).  
E_RXTX/SEG9  
E_RST/SEG11  
E_TCLK/SEG10  
ICE_E  
I/O  
I/O  
O
1, 4, 5  
1, 4, 5  
4, 5  
ICE enable. When zero, E_RST, E_TCLK and E_RXTX become  
SEG32, SEG33 and SEG38 respectively. For production units, this  
pin should be pulled to GND to disable the emulator port.  
I
2
CKTEST/SEG19,  
MUXSYNC/SEG7  
O
4, 5  
Multi-use pins, configurable as either multiplexer/clock output or LCD  
segment driver using the I/O RAM registers CKOUT_E or  
MUX_SYNC_E.  
Digital output test multiplexer. Controlled by TMUX[3:0].  
TMUXOUT  
O
4
Multi-use pin, configurable as Optical Receive Input or general DIO.  
When configured as OPT_RX, this pin receives a signal from an external  
photo-detector used in an IR serial interface. If unused, this pin must  
be terminated to V3P3D or GNDD, or configured as a DIO and set  
to an output by the firmware.  
OPT_RX/DIO1  
I/O  
3, 4, 7  
Multi-use pin, configurable as either optical LED transmit output,  
WPULSE, RPULSE, or general DIO. When configured as OPT_TX,  
this pin is capable of directly driving an LED for transmitting data in  
an IR serial interface. If unused, this pin must be left open, or  
configured as a DIO and set to an output by the firmware.  
OPT_TX/DIO2  
I/O  
3, 4  
Chip reset: This input pin is used to reset the chip into a known state.  
For normal operation, this pin is pulled low. To reset the chip, this pin  
should be pulled high. This pin has an internal 30 µA (nominal)  
current source pull-down. No external reset circuitry is necessary.  
RESET  
RX  
I
I
2
3
UART input. If this pin is unused, it must be terminated to V3P3D  
or GNDD.  
UART output.  
TX  
O
I
4
7
TEST  
Enables Production Test. This pin must be grounded in normal  
operation.  
Pin types: P = Power, O = Output, I = Input, I/O = Input/Output.  
The circuit number denotes the equivalent circuit, as specified in Section 5 I/O Equivalent Circuits.  
28  
Rev. 1.4