OM13006,598 NXP Semiconductors, OM13006,598 Datasheet - Page 16

• Manufacturer Part Number: OM13006,598
• Description: BOARD EVAL EM773 METER EU PLUG
• Manufacturer: NXP Semiconductors
• Type: Other Power Managementr

Specifications of OM13006,598

• Design Resources: Plug Meter Schematics, Gerber Files USB Dongle Schematics, Gerber Files
• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 32-Bit
• Utilized Ic / Part: EM773FHN33,551
• Interface Type: USB
• Maximum Operating Temperature: + 150 C
• Operating Supply Voltage: 1.8 V to 3.6 V
• Product: Power Management Development Tools
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Primary Attributes: -
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: EM773, OL2381
• Other names: 568-6681

NXP Semiconductors
EM773
Objective data sheet
7.15.5.2 Deep-sleep mode
7.15.5.3 Deep power-down mode
7.16.1 Start logic
7.16.2 Reset
7.16.3 Brownout detection
7.16 System control
In Deep-sleep mode, the chip is in Sleep mode, and in addition all analog blocks are shut
down. As an exception, the user has the option to keep the watchdog oscillator and the
BOD circuit running for self-timed wake-up and BOD protection. Deep-sleep mode allows
for additional power savings.
Up to 13 pins total serve as external wake-up pins to the start logic to wake up the chip
from Deep-sleep mode.
Unless the watchdog oscillator is selected to run in Deep-sleep mode, the clock source
should be switched to IRC before entering Deep-sleep mode, because the IRC can be
switched on and off glitch-free.
In Deep power-down mode, power is shut off to the entire chip with the exception of the
WAKEUP pin. The EM773 can wake up from Deep power-down mode via the WAKEUP
pin.
The start logic connects external pins to corresponding interrupts in the NVIC. Each pin
shown in
vector table. The start logic pins can serve as external interrupt pins when the chip is
running. In addition, an input signal on the start logic pins can wake up the chip from
Deep-sleep mode when all clocks are shut down.
The start logic must be configured in the system configuration block and in the NVIC
before being used.
Reset has four sources on the EM773: the RESET pin, the Watchdog reset, Power-On
Reset (POR), and the BrownOut Detection (BOD) circuit. The RESET pin is a Schmitt
trigger input pin. Assertion of chip reset by any source, once the operating voltage attains
a usable level, starts the IRC and initializes the flash controller.
When the internal Reset is removed, the processor begins executing at address 0, which
is initially the Reset vector mapped from the boot block. At that point, all of the processor
and peripheral registers have been initialized to predetermined values.
The EM773 includes four levels for monitoring the voltage on the V
falls below one of the four selected levels, the BOD asserts an interrupt signal to the
NVIC. This signal can be enabled for interrupt in the Interrupt Enable Register in the NVIC
in order to cause a CPU interrupt; if not, software can monitor the signal by reading a
dedicated status register. Four additional threshold levels can be selected to cause a
forced reset of the chip.
Table 2
All information provided in this document is subject to legal disclaimers.
as input to the start logic has an individual interrupt in the NVIC interrupt
Rev. 1 — 1 September 2010
DD
Energy metering IC
pin. If this voltage
© NXP B.V. 2010. All rights reserved.
EM773
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