EM773 datasheet(2/51 Pages) PHILIPS

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EM773

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Product data sheet

Rev. 2 — 3 January 2012

2 of 51

NXP Semiconductors

EM773

Energy metering IC

 Serial interfaces:

 UART with fractional baud rate generation, internal FIFO, and RS-485 support.

 One SPI controller with SSP features and with FIFO and multi-protocol capabilities.

 I2C-bus interface supporting full I2C-bus specification and Fast-mode Plus with a

data rate of 1 Mbit/s with multiple address recognition and monitor mode.

 Clock generation:

 12 MHz internal RC oscillator trimmed to 1 % accuracy that can optionally be used

as a system clock.

 Crystal oscillator with an operating range of 1 MHz to 25 MHz.

 Programmable watchdog oscillator with a frequency range of 7.8 kHz to 1.8 MHz.

 PLL allows CPU operation up to the maximum CPU rate without the need for a

high-frequency crystal. May be run from the system oscillator or the internal RC

oscillator.

 Clock output function with divider that can reflect the system oscillator clock, IRC

clock, CPU clock, and the Watchdog clock.

 Power control:

 Integrated PMU (Power Management Unit) to minimize power consumption during

Sleep, Deep-sleep, and Deep power-down modes.

 Three reduced power modes: Sleep, Deep-sleep, and Deep power-down.

 Processor wake-up from Deep-sleep mode via a dedicated start logic using up to

13 of the functional pins.

 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).

 Available as 33-pin HVQFN33 package.

Applications

 Smart Metering

EM773 Datasheet(PDF) 2 Page - NXP Semiconductors