71M6543F-IGT/F Maxim Integrated Products, 71M6543F-IGT/F Datasheet - Page 119

• Manufacturer Part Number: 71M6543F-IGT/F
• Description: PMIC Solutions Precision Energy Meter IC
• Manufacturer: Maxim Integrated Products
• Type: Metering SoCr

Specifications of 71M6543F-IGT/F

• Core: 8051
• Core Architecture: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 5 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: 51
• Number Of Timers: 2
• On-chip Adc: 22 bit
• Operating Supply Voltage: 3 V to 3.6 V
• Package / Case: LQFP-100
• Processor Series: 8051
• Program Memory Size: 64 KB
• Program Memory Type: Flash
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

}
#endif //#if HIGH_PRECISION_METER
The byte values containing less than 8 valid bits are LSB justified. For example Info Page offset 0x90 is
an 8-bit object, whose three LSBs are bits [10:8] of the complete TEMP_85[10:0] 11-bit object. The Info
Page data objects are 2’s complement format and should be sign extended when read into a 16-bit data
type (see case _TEMP85 in the code example).
#if HIGH_PRECISION_METER
int16_t read_trim (enum eTRIMSEL select) {
v1.2
uint8r_t *px;
int16_t x;
px = ((uint16_t)select) + ((uint8r_t *)(CE3 << 10));
switch (select)
{
}
return (x);
default:
case _TRIMBGD:
case _TRIMBGB:
case _TEMP85:
INFO_PG = 1;
x = *px;
INFO_PG = 0;
break;
INFO_PG = 1;
x = *(uint16r_t*)px;
INFO_PG = 0;
break;
INFO_PG = 1;
x = *(uint16r_t*)px;
INFO_PG = 0;
if (x & 0x800)
break;
x |= 0xF800;
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71M6543F/H and 71M6543G/GH Data Sheet
119