EM773 datasheet(6/45 Pages) NXP

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EM773

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Objective data sheet

Rev. 1 — 1 September 2010

6 of 45

NXP Semiconductors

EM773

Energy metering IC

SWCLK/PIO0_10/SCK0/

CT16B0_MAT2

19[3]

yes

I;PU

SWCLK — Serial wire clock.

I/O

PIO0_10 — General purpose digital input/output pin.

I/O

SCK0 — Serial clock for SPI0.

O-

CT16B0_MAT2 — Match output 2 for 16-bit timer 0.

I_HIGHGAIN

21[5]

I;PU

I_HIGHGAIN — High gain current input for metrology

engine.

PIO1_1 to PIO1_9;

PIO1_11

I/O

Port 1 — Port 1 is a 12-bit I/O port with individual

direction and function controls for each bit. The

operation of port 1 pins depends on the function

selected through the IOCONFIG register block. Pins

PIO1_0 and PIO1_10 are not available.

VOLTAGE

22[5]

I;PU

VOLTAGE — Voltage input for the metrology engine.

R/PIO1_1/

CT32B1_MAT0

23[5]

I;PU

R — Reserved. Configure for an alternate function in

the IOCONFIG block.

I/O

PIO1_1 — General purpose digital input/output pin.

O-

CT32B1_MAT0 — Match output 0 for 32-bit timer 1.

R/PIO1_2/

CT32B1_MAT1

24[5]

I;PU

R — Reserved. Configure for an alternate function in

the IOCONFIG block.

I/O

PIO1_2 — General purpose digital input/output pin.

O-

CT32B1_MAT1 — Match output 1 for 32-bit timer 1.

SWDIO/PIO1_3/

CT32B1_MAT2

25[5]

I/O

I;PU

SWDIO — Serial wire debug input/output.

I/O

PIO1_3 — General purpose digital input/output pin.

O-

CT32B1_MAT2 — Match output 2 for 32-bit timer 1.

PIO1_4/

CT32B1_MAT3/WAKEUP

I/O

I;PU

PIO1_4 — General purpose digital input/output pin.

O-

CT32B1_MAT3 — Match output 3 for 32-bit timer 1.

I-

WAKEUP — Deep power-down mode wake-up pin.

This pin must be pulled HIGH externally to enter Deep

power-down mode and pulled LOW to exit Deep

power-down mode.

PIO1_5/RTS/

CT32B0_CAP0

30[3]

I/O

I;PU

PIO1_5 — General purpose digital input/output pin.

O-

RTS — Request To Send output for UART.

I-

CT32B0_CAP0 — Capture input 0 for 32-bit timer 0.

PIO1_6/RXD/

CT32B0_MAT0

31[3]

I/O

I;PU

PIO1_6 — General purpose digital input/output pin.

I-

RXD — Receiver input for UART.

O-

CT32B0_MAT0 — Match output 0 for 32-bit timer 0.

PIO1_7/TXD/

CT32B0_MAT1

32[3]

I/O

I;PU

PIO1_7 — General purpose digital input/output pin.

O-

TXD — Transmitter output for UART.

O-

CT32B0_MAT1 — Match output 1 for 32-bit timer 0.

PIO1_8

7[3]

I/O

I;PU

PIO1_8 — General purpose digital input/output pin.

PIO1_9

12[3]

I/O

I;PU

PIO1_9 — General purpose digital input/output pin.

I_LOWGAIN

I;PU

I_LOWGAIN — Low gain current input for metrology

engine.

Table 2.

EM773 pin description table (HVQFN33 package) …continued

Symbol

Start

logic

input

Type

Reset

state

[1]

Description

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