71M6543GH MAXIM [Maxim Integrated Products], 71M6543GH Datasheet - Page 96

• Manufacturer Part Number: 71M6543GH
• Description: Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation
• Manufacturer: MAXIM [Maxim Integrated Products]

71M6543F/H and 71M6543G/GH Data Sheet
4.11 Connecting the Emulator Port Pins
Even when the emulator is not used, small shunt capacitors to ground (22 pF) should be used for protection
from EMI as illustrated in
4.12 Flash Programming
4.12.1 Flash Programming via the ICE Port
Operational or test code can be programmed into the flash memory using either an in-circuit emulator or
the Flash Programmer Module (TFP-2) available from Teridian. The flash programming procedure uses
the E_RST, E_RXTX, and E_TCLK pins.
4.12.2 Flash Programming via the SPI Port
It is possible to erase, read and program the flash memory of the 71M6543 via the SPI port. See
2.5.12
4.13 MPU Demonstration Code
All application-specific MPU functions mentioned in
demonstration C source code supplied by Teridian. The code is available as part of the Demonstration Kit
for the 71M6543. The Demonstration Kits come with the 71M6543 preprogrammed with demonstration
firmware and mounted on a functional sample meter Demo Board. The Demo Boards allow for quick and
efficient evaluation of the IC without having to write firmware or having to supply an in-circuit emulator
(ICE).
96
Figure 36: External Components for the RESET Pin: Push-Button (Left), Production Circuit (Right)
V3P3D
VBAT/
for a detailed description.
1k Ω
R
2
0.1µF
Figure 37: External Components for the Emulator Interface
Switch
Reset
62 Ω
62 Ω
Figure
V3P3D
© 2008–2011 Teridian Semiconductor Corporation
62 Ω
37. Production boards should have the ICE_E pin connected to ground.
22 pF
R
V3P3D
10k Ω
1
LCD Segments
22 pF
(optional)
22 pF
RESET
GNDD
71M6543
4 Application Information
71M6543
ICE_E
E_RST
E_RXT
E_TCLK
R
R
100Ω
100Ω
1
1
are featured in the
RESET
RESET
DGND
DGND
71M6543
71M6533
71M6533
v1.2