Datasheet

78M6610+PSU Data Sheet
1 On-Chip Resources Overview
The 78M6610+PSU integrates all the functional hardware blocks required to embed solid-state AC power
and energy measurement. Included on the device are:
• Accurate oscillator and clock management logic
• Power-on reset, watchdog timer, and reset circuitry
• High-accuracy analog front-end (AFE) with trimmed voltage reference and temperature sensor
• 24-bit energy measurement processor (EMP)
• RAM and flash memory
• Communication interfaces
• Multipurpose Digital I/O
Figure 1-1
shows a block diagram of the device. A detailed description of various functional blocks
follows.
XTAL
OSC
MUX
AIN ATEMP2
AVN
AIP
XIN
XOUT
V
3P3D
VREF
VBIAS
GEN
IBIAS
GEN
MUX
CONTROL
INFO.
BLOCK
FLASH
4Kx16
PROGRAM
MEMORY
EMP
Energy Measurement
Processor
CLOCK
GEN
GNDD
UART
TEMP
SENSE
SDI/RX/SDAi
SDO/TX/SDAo
ACFAULT
SSB/DIR/SCL
ADDR1
SPCK/ADDR0
CE DATA
RAM
512x24
I
2
C
RESET
ADC
16
CK20M
SPI
RC
OSC
CK
SEL
24b data bus
RELAYCTRL
TIMERS
WATCH DOG
program bus
IO
MUX
TRIM
BITS
V
3P3A
2.5v
REG.
2.5v
V
3P3
DIV
SQ
RT
MPY
TEMP
LOG.
IFCONFIG
MP0
ACCRIT
GNDA
MP1
AVP
ATEMP1
FIR
Figure 1-1: IC Functional Block Diagram
Rev 3 5