71M6542F-IGT/F Maxim Integrated Products, 71M6542F-IGT/F Datasheet - Page 119
![no-image](/images/manufacturer_photos/0/4/417/maxim_integrated_products_sml.jpg)
71M6542F-IGT/F
Manufacturer Part Number
71M6542F-IGT/F
Description
PMIC Solutions Precision Energy Meter IC
Manufacturer
Maxim Integrated Products
Type
Metering SoCr
Datasheet
1.71M6541F-DB.pdf
(165 pages)
Specifications of 71M6542F-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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
71M6542F-IGT/F
Manufacturer:
AD
Quantity:
1 500
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v1.1
Name
MUX_DIV[3:0]
OPT_BB
OPT_FDC[1:0]
OPT_RXDIS
OPT_RXINV
OPT_TXE [1:0]
OPT_TXINV
OPT_TXMOD
OSC_COMP
PB_STATE
PERR_RD
PERR_WR
PLL_OK
SFR FC[6]
SFR FC[5]
SFR F8[0]
SFR F9[4]
Location
2100[7:4]
2457[5:4]
2456[3:2]
28A0[5]
2457[0]
2457[2]
2457[1]
2456[0]
2456[1]
© 2008–2011 Teridian Semiconductor Corporation
Rst Wk Dir
00 –
0
0
0
0
0
0
0
0
0
0
0
0
–
–
–
–
–
–
–
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W Invert OPT_TX when 1. This inversion occurs before modulation.
R/W
R/W
R/W
R
R
Description
MUX_DIV[3:0] is the number of ADC time slots in each MUX frame. The
maximum number of time slots is 11.
Configures the input of the optical port to be a DIO pin to allow it to be
bit-banged. In this case, DIO5 becomes a third high speed UART. Refer to
2.5.7 UART and Optical Interface
(Third UART)” sub-heading on
Selects OPT_TX modulation duty cycle.
OPT_RX can be configured as an input to the optical UART or as SEGDIO55.
OPT_RXDIS = 0 and LCD_MAP[55] = 0: OPT_RX
OPT_RXDIS = 1 and LCD_MAP[55] = 0: DIO55
OPT_RXDIS = 0 and LCD_MAP[55] = 1: SEG55
OPT_RXDIS = 1 and LCD_MAP[55] = 1: SEG55
Inverts result from OPT_RX comparator when 1. Affects only the UART input.
Has no effect when OPT_RX is used as a DIO input.
Configures the OPT_TX output pin.
If LCD_MAP[51] = 0:
If LCD_MAP[51] = 1:
Enables modulation of OPT_TX. When OPT_TXMOD is set, OPT_TX is
modulated when it would otherwise have been zero. The modulation is applied
after any inversion caused by OPT_TXINV.
Enables the automatic update of RTC_P and RTC_Q every time the temperature
is measured.
The de-bounced state of the PB pin.
The IC sets these bits to indicate that a parity error on the remote sensor has
been detected. Once set, the bits are remembered until they are cleared by
the MPU.
Indicates that the clock generation PLL is settled.
OPT_FDC
00
01
10
11
00 = DIO51, 01 = OPT_TX, 10 = WPULSE, 11 = VARPULSE
xx = SEG51
Function
50% Low
25% Low
12.5% Low
6.25% Low
page
under the “Bit Banged Optical UART
58.
119
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