71M6513-IGTR/F Maxim Integrated Products, 71M6513-IGTR/F Datasheet - Page 54

• Manufacturer Part Number: 71M6513-IGTR/F
• Description: IC ENERGY METER 3PH 100-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of 71M6513-IGTR/F

• Mounting Style: SMD/SMT
• Package / Case: LQFP-100
• Program Memory Size: 64 KB
• Program Memory Type: Flash
• Supply Current (max): 6.4 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Power-Up: After power-up, the 71M6513/6513H is in reset as long as V1 < VBIAS. As soon as V1 exceeds VBIAS, the reset
timer is started which takes the MPU out of reset after 4100 oscillator cycles (see Figure 20). The MPU then initiates its pre-
boot phase lasting 32 cycles. The supply current will be low but not zero during power-up. It will increase, once V1 exceeds
VBIAS and will increase to the nominal value once the preboot phase starts. The supply current may then be reduced under
firmware control, following the steps specified in Battery Operation and Power Save Modes.
When V1 is lower than VBIAS, the external battery will power the following parts of the 71M6513/6513H:
In normal mode of operation, running on 3.3V supply, various resources of the 71M6513/6513H may be shut down by the
MPU firmware in order to reduce power consumption while other essential resources such as UARTs may remain active.
Table 59 outlines these resources and their typical current consumption (based on initial condition MPU_DIV = 0).
*) This bit is to be used with caution! Inadvertently setting this bit will inhibit access to the part with the ICE interface and thus
preclude flash erase and programming operations.
Page: 54 of 104
POWER
DOWN
•
•
•
•
A Maxim Integrated Products Brand
RTC
Crystal oscillator circuitry
MPU XRAM
WD_OVF bit
PWR
UP
Figure 20: Timing Diagram for Voltages, Current and Operation Modes after Power-Up
Power Saving Measure
Disable the CE
Disable the ADC
Disable clock test output CKTEST
Disable emulator clock
Set flash read pulse timing to 33 ns
Disable the LCD voltage boost circuitry
Disable RTM outputs
Increase the clock divider for the MPU
V2P5
V1
V1 > VBIAS
RESET TIMER
125ms
© 2005-2011 Teridian Semiconductor Corporation
Table 59: Power Saving Measures
BOOT
PRE-
1ms
Power Save Modes
Battery Operation
V3P3
FIRMWARE HAS CONTROL OVER CHIP...
3-Phase Energy Meter IC
SUPPLY CURRENT
Software Control
LCD_BSTEN = 0
ECK_DIS = 1 *)
CKOUTDIS = 1
MPU_DIV = X
FLASH66Z =1
ADC_DIS = 1
RTM_EN = 0
CE_EN = 0
71M6513/71M6513H
DATA SHEET
0.4mA/MHz
Savings
Typical
0.16mA
0.04mA
0.01mA
1.8mA
0.6mA
0.1mA
0.9mA
nominal
0mA
1.5V
3.3V
0V
AUGUST 2011