EM773FHN33
Energy metering IC; up to 32 kB flash and 8 kB SRAM
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The EM773 is an ARM Cortex-M0 based, low-cost 32-bit energy metering IC, designed for 8/16-bit smart metering applications. The EM773 offers programmability and on-chip metrology functionality combined with a low power, simple instruction set and memory addressing with reduced code size compared to existing 8/16-bit architectures. The EM773 operates at CPU frequencies of up to 48 MHz. The peripheral complement of the EM773 includes up to 32 kB of flash memory, up to 8 kB of data memory, one Fast-mode Plus I2C-bus interface, one RS-485/EIA-485 UART, one SPI interface with SSP features, three general purpose counter/timers, up to 25 general purpose I/O pins, and a metrology engine for energy measurement.
Features and benefits
- ARM Cortex-M0 processor, running at frequencies of up to 48 MHz
- ARM Cortex-M0 built-in Nested Vectored Interrupt Controller (NVIC)
- Serial Wire Debug
- System tick timer
- 32 kB on-chip flash programming memory
- 8 kB SRAM
- In-System Programming (ISP) and In-Application Programming (IAP)
- Up to 25 General Purpose I/O (GPIO) pins
- GPIO pins can be used as edge and level sensitive interrupt sources
- High-current output driver (20 mA) on one pin
- High-current sink drivers (20 mA) on two I2C-bus pins in Fast-mode Plus
- Three general purpose counter/timers
- Programmable Windowed WatchDog Timer (WWDT)
- Metrology Engine for Smart Metering with two current inputs and a voltage input
- UART with fractional baud rate generation, internal FIFO, and RS-485 support
- One SPI controller with SSP features
- I2C-bus interface supporting full I2C-bus specification and Fast-mode Plus
- 12 MHz internal RC oscillator trimmed to 1 % accuracy
- Crystal oscillator with an operating range of 1 MHz to 25 MHz
- Programmable watchdog oscillator
- PLL allows CPU operation up to the maximum CPU rate
- Clock output function with divider
- Integrated PMU (Power Management Unit)
- Three reduced power modes: Sleep, Deep-sleep, and Deep power-down
- Processor wake-up from Deep-sleep mode
- Power-On Reset (POR)
- Brownout detect with four separate thresholds for interrupt and forced reset
- Unique device serial number for identification
- Single 3.3 V power supply (1.8 V to 3.6 V)
Applications
- Smart Metering
All information on this product information page is subject to the subsequent disclaimers:
Parametrics of this product
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| Clock generator | ||||||
| fclk(max) | maximum clock frequency | 48 | MHz | |||
| Operating conditions | ||||||
| IDD | supply current | Active mode; code while(1){}; executed from flash; VDD = 3.3 V; system clock = 50 MHz | 9 | mA | ||
| IDD | supply current | VDD = 3.3 V; Deep power-down mode; | 220 | nA | ||
| IDD | supply current | Active mode; code while(1){}; executed from flash; VDD = 3.3 V; system clock = 12 MHz | 3 | mA | ||
| IDD | supply current | Sleep mode; VDD = 3.3 V; system clock = 12 MHz | 2 | mA | ||
| IDD | supply current | Deep-sleep mode; VDD = 3.3 V | 6 | µA | ||
| VDD | supply voltage | 1.8 | 3.3 | 3.6 | V | |
| Memory | ||||||
| Nbyte(on-chip) | on-chip memory | FLASH | 32 | kB | ||
| Nbyte(on-chip) | on-chip memory | RAM | 8 | kB | ||
| I/O pins | ||||||
| Nio | number of I/O terminals | 25 | ||||
| Serial Interface | ||||||
| Nperi | number of peripherals | I²C; fbit ≤ 1 Mbit/s | 1 | |||
| Nperi | number of peripherals | UART; fbit ≤ 3.125 Mbit/s | 1 | |||
| Nperi | number of peripherals | SPI; fbit ≤ 25 Mbit/s | 1 | |||
| Timer | ||||||
| Nperi | number of peripherals | WDT | 1 | |||
| Nperi | number of peripherals | TIM | 3 | |||
| Analog | ||||||
| Nperi | number of peripherals | ADC; 2 x current input; 1 x voltage input | 3 | |||
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Products / Packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking |
|---|---|---|---|---|---|---|
| EM773FHN33 | EM773FHN33,551 | 9352 919 67551 | Volume production | SOT865-3 (HVQFN32) | Tray Dry Pack, Bakeable, Single | Standard Marking |
Quality, reliability & chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree conversion date | RHF | IFR (FIT) | MTBF (hours) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|
| EM773FHN33 | EM773FHN33,551 | EM773FHN33 |  | Always Pb-free |  | 3 | 3 |
Documentation for this product
| Type | Format | Title | Date |
|---|---|---|---|
| Data sheet | Energy metering IC; up to 32 kB flash and 8 kB SRAM (v.2.0) | 2012-01-03 | |
| Other type | exe | EM773 SDK 2.0 Setup.exe (v.2.0) | 2012-01-13 |
| User manual | EM773 User manual (v.2.0) | 2011-12-09 |
Ordering & availability
Sample
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