71M6543GH MAXIM [Maxim Integrated Products], 71M6543GH Datasheet - Page 77
71M6543GH
Manufacturer Part Number
71M6543GH
Description
Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
1.71M6543GH.pdf
(157 pages)
- Current page: 77 of 157
- Download datasheet (3Mb)
•
•
•
The MPU has access to a variety of registers that signal the event that caused the wake up. See
Transitions from both LCD and SLP mode to BRN mode can be initiated by the following events:
•
Wake-Up Behavior
Table 62
CE (Computation Engine)
FIR
ADC, VREF
PLL
Battery Measurement
Temperature sensor
Max MPU clock rate
MPU_DIV clk. divider
ICE
DIO Pins
Watchdog Timer
LCD
LCD Boost
EEPROM Interface (2-wire)
EEPROM Interface (3-wire)
UART (full speed)
Optical TX modulation
Flash Read
Flash Page Erase
Flash Write
RAM Read and Write
Wakeup Timer
OSC and RTC
DRAM data preservation
NV RAM data preservation
Notes:
v1.2
Circuit Function
Wake-up timer timeout.
Pushbutton (PB) is activated.
A rising edge on SEGDIO4, SEGDIO52 or SEGDIO55.
Activity on the RX or OPT_RX pins.
1.
2.
“--“ indicates that the corresponding circuit is not active
“Boost” implies that the LCD boost circuit is active (i.e., LCD_VMODE[1:0] = 10 (I/O RAM 0x2401[7:6])). The LCD boost
circuit requires a clock from the PLL to function. Thus, the PLL is automatically kept active if LCD boost is active while in
LCD mode, otherwise the PLL is de-activated.
shows the circuit functions available in each operating mode.
for details.
PLL_FAST=1
(from PLL)
© 2008–2011 Teridian Semiconductor Corporation
4.92MHz
38.4kHz
MSN (Mission Mode)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
System Power
Table 62: Available Circuit Functions
PLL_FAST=0
(from PLL)
1.57MHz
38.9kHz
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PLL_FAST=1
(from PLL)
71M6543F/H and 71M6543G/GH Data Sheet
BRN (Brownout Mode)
4.92MHz
38.4kHz
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
--
--
--
1
Battery Power
PLL_FAST=0
(from PLL)
1.57MHz
38.9kHz
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
--
--
--
Boost
LCD
Yes
Yes
Yes
Yes
Yes
Yes
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
2
3.4
SLEEP
Yes
Yes
Yes
Yes
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
77
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