71M6541D-IGT/F Maxim Integrated Products, 71M6541D-IGT/F Datasheet - Page 69

• Manufacturer Part Number: 71M6541D-IGT/F
• Description: PMIC Solutions Precision Energy Meter IC
• Manufacturer: Maxim Integrated Products
• Type: Metering SoCr

Specifications of 71M6541D-IGT/F

• Core: 8051
• Core Architecture: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 3 KB
• Device Million Instructions Per Second: 5 MIPS
• Interface Type: I2C, ICE, SPI, UART
• Maximum Clock Frequency: 5 MHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Programmable I/os: 30
• Number Of Timers: 2
• On-chip Adc: 22 bit
• Operating Supply Voltage: 3 V to 3.6 V
• Package / Case: LQFP-64
• Processor Series: 8051
• Program Memory Size: 32 KB
• Program Memory Type: Flash
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

LCD Drivers (71M6541D/F)
With a maximum of 35 LCD driver pins available, the 71M6541D/F is capable of driving up to 6 x 35 = 210
pixels of an LCD display when using the 6 x multiplex mode. At eight pixels per digit, this corresponds to
26 digits.
LCD segment data is written to the LCD_SEGn[5:0] I/O RAM registers as described in
SEG46 through SEG50 cannot be configured as DIO pins. Display data for these pins are written to I/O
RAM registers LCD_SEG46[5:0] through LCD_SEG50[5:0] (see
high, it overrides the SEG functionality, and pins E_RXTX/SEG48, E_TCLK/SEG49 and E_RST/SEG50
function as ICE interface pins.
LCD_MAP[46] and LCD_MAP[47] (I/O RAM 0x2406[6] and 0x2407[7]) must be set to 1 in order to permit
TMUX2OUT/SEG46 and TMUXOUT/SEG47 to operate as SEG drivers, otherwise. If LCD_MAP[46] and
LCD_MAP[47] are 0, these pins operate as TMU2XOUT and TMUXOUT (see
(TMUXOUT and TMUX2OUT Pins)
v1.1
Table 58: 71M6541D/F LCD Data Registers for SEG46 to SEG50
SEG
Pin #
Configuration
SEG Data Register
© 2008–2011 Teridian Semiconductor Corporation
on page 78).
when used for ICE interface
46
61
or TMUXOUT/TMUX2OUT.
Always LCD pins, except
47
60
Table
48
38
58). When the ICE_E pin is pulled
49
37
36
50
2.5.12 Test Ports
2.5.8.2
and
2.5.8.3.
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