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参数资料
| 型号： | 78M6618-IMR/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC68 |
| 封装： | 8 X 8 MM, ROHS COMPLIANT, TQFN-68 |
| 文件页数： | 32/32页 |
| 文件大小： | 419K |
| 代理商： | 78M6618-IMR/F |
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DS_6618_005
78M6618 Data Sheet
Rev. 1.4
9
1.6.1 SFR
Several custom Special Function Registers (SFR) registers are implemented in the 78M6618’s 80515
MPU. See the 78M6618 Programmer’s Reference Manual for more information regarding the mapping of
functionality to specific SFR and IORAM addresses.
1.7
XRAM
The CE and MPU share a single, general purpose 4 KB RAM (also referred to as XRAM) for data. The
XRAM is natively accessible as 32bit words from the CE and on 8 bit boundaries from the CPU. The
XRAM is accessed by the CPU through addresses 0x0000 to 0x0FFF.
1.8
IORAM
The MPU accesses most of its external input and output functionality as well as programmable
functionality through memory mapped IO (IORAM). The IORAM is accessed by the CPU as data
addresses 0x2000 to 0x20FF. See the 78M6618 Programmer’s Reference Manual for more information
regarding the mapping of functionality to specific IORAM addresses.
1.9
FLASH
The 78M6618 includes 128 KB of on-chip Flash memory. For read/write access from the CPU, the flash
is broken into four 32 KB banks that are managed by SFR settings. For erasing of the flash memory from
the CPU the flash is segmented into individual 1024-byte pages and also controlled by SFR settings. See
the 78M6618 Programmer’s Reference Manual for more information regarding the use of flash and the
mapping of functionality to specific SFR settings.
1.9.1 Program Security
The 78M6618 has functionality to guarantee the security of the user’s MPU and CE program code. When
enabled, the security feature limits the ICE to global Flash erase operations only. All other ICE
operations are blocked. Security is enabled by MPU code that is executed in a pre-boot interval before
the primary boot sequence begins. Once security is enabled, the only way to disable it is to perform a
global erase of the Flash, followed by a chip reset.
1.10 Oscillator
The 78M6618 oscillator drives a standard 32.768 kHz watch crystal. These crystals are accurate and do
not require a high-current oscillator circuit. The 78M6618 oscillator has been designed specifically to
handle these crystals and is compatible with their high impedance and limited power handling capability.
The oscillator is powered directly and only from the VBAT pin, which therefore must be connected to a
DC voltage source not to exceed 4 V. The oscillator requires approximately 100 nA, which is negligible
compared to the internal leakage of a battery
Since the oscillator is self-biasing, an external resistor must not be connected across the crystal.
1.11 PLL and Internal Clock Generation
Timing for the device is derived from the 32.768 kHz crystal oscillator output. The PLL and on-chip timing
functions provide several clocks which include:
The MPU clock (CKMPU)
The emulator clock (2 x CKMPU)
The clock for the CE (CKCE)
The delta-sigma ADC and FIR clock(CKADC, CKFIR)
These internal clocks can be adjusted for various programmable rates which affect device functionality.
See the 78M6618 Programmer’s Reference Manual for more information regarding the programmability
of the 78M6618 PLL and internal clock generation modules.
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| 78M6618-M/F/P1 | 功能描述:计量片上系统 - SoC 8 Out Sgl Phase Pwr & Energy Msrmt IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
| 78M6618-M/F/P2 | 功能描述:IC PWR MEASUREMENT OCTAL 68QFN 制造商:maxim integrated 系列:- 包装:管件 零件状态:停产 输入阻抗:40 千欧 ~ 90 千欧 测量误差:0.5% 电压 - I/O 高:2V 电压 - I/O 低:0.8V 电流 - 电源:- 电压 - 电源:3 V ~ 3.6 V 表计类型:单相 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:68-VFQFN 裸露焊盘 供应商器件封装:68-QFN（8x8） 标准包装:260 |
| 78M6618-MR/F/P1 | 功能描述:计量片上系统 - SoC 8 Out Sgl Phase Pwr & Energy Msrmt IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
| 78M6618-MR/F/P2 | 功能描述:IC PWR MEASUREMENT OCTAL 68QFN 制造商:maxim integrated 系列:- 包装:带卷（TR） 零件状态:停产 输入阻抗:40 千欧 ~ 90 千欧 测量误差:0.5% 电压 - I/O 高:2V 电压 - I/O 低:0.8V 电流 - 电源:- 电压 - 电源:3 V ~ 3.6 V 表计类型:单相 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:68-VFQFN 裸露焊盘 供应商器件封装:68-QFN（8x8） 标准包装:2,500 |
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