OM13006,598 NXP Semiconductors, OM13006,598 Datasheet - Page 9

• 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

3.1 Introduction
3.2 Pin description
3.3 Clocking and power control
UM10415
User manual
The system configuration block controls oscillators, start logic, and clock generation of the
EM773. Also included in this block are registers for setting the priority for AHB access and
a register for remapping flash, SRAM, and ROM memory areas.
Table 2
Table 2.
See
The EM773 includes three independent oscillators. These are the system oscillator, the
Internal RC oscillator (IRC), and the watchdog oscillator. Each oscillator can be used for
more than one purpose as required in a particular application.
Following reset, the EM773 will operate from the Internal RC oscillator until switched by
software. This allows systems to operate without any external crystal and the bootloader
code to operate at a known frequency.
The SYSAHBCLKCTRL register gates the system clock to the various peripherals and
memories. UART, the WDT, and SPI0 have individual clock dividers to derive peripheral
clocks from the main clock.
The main clock and the clock outputs from the IRC, the system oscillator, and the
watchdog oscillator can be observed directly on the CLKOUT pin.
For details on power control see
Pin name
CLKOUT
PIO0_0 to PIO0_10
UM10415
Chapter 3: EM773 System configuration
Rev. 1 — 10 September 2010
Figure 3
shows pins that are associated with system control block functions.
Pin summary
for an overview of the EM773 Clock Generation Unit (CGU).
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 10 September 2010
Pin direction
O
I
Section
3.7.
Pin description
Clockout pin
Start logic wake-up pins port 0
© NXP B.V. 2010. All rights reserved.
User manual
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