71M6532D-IGT/F 参数 Datasheet PDF下载

Data Sheet 71M6531D/F-71M6532D/F

FDS 6531/6532 005

3. After periods of operation under battery power, the temperature for the time the meter was not po-

wered can be estimated by averaging the temperatures before and after battery operation. Based on

this, the overall correction for the RTC time can be calculated and applied to the RTC after main

power returns to the meter.

3.5

Connecting LCDs

The 71M6531D/F and 71M6532D/F have an on-chip LCD controller capable of controlling static or multip-

lexed LCDs.

shows the basic connection for an LCD.

The following dedicated and multi-use pins can be assigned as LCD segment pins for the 71M6531D/F:

•

•

•

12 dedicated LCD segment pins: SEG0 to SEG2, SEG7, SEG8, SEG12 to SEG18.

7 dual-function pins: SEG3/PCLK, SEG4/PSDO, SEG5/PCSZ, SEG6/PSDI, E_RXTX/SEG9,

E_TCLK/SEG10, and E_RST/SEG11.

14 combined DIO and segment pins: SEG24/DIO4 to SEG35/DIO15, SEG37/DIO17, SEG48/DIO28,

SEG49/DIO29 and SEG63/DIO43 to SEG66/DIO46.

The following dedicated and multi-use pins can be assigned as LCD segments for the 71M6532D/F:

•

•

•

15 dedicated LCD segment pins: SEG0 to SEG2, SEG8, SEG12 - SEG18, SEG20 - SEG23.

9 dual-function pins: MUX_SYNC/SEG7, E_RXTX/SEG9, E_TCLK/SEG10, E_RST/SEG11,

SEG3/PCLK, SEG4/PSDO, SEG5/PCSZ, SEG6/PSDI.

43 combined DIO and segment pins, as described in section 1.5.8.

71M6531D/F or 71M6532D/F

LCD

segments

commons

.

Figure 31: Connecting LCDs

3.6

Connecting I

2

C EEPROMs

I

2

C EEPROMs or other I

2

C compatible devices should be connected to the DIO pins DIO4 and DIO5, as

shown in

Pull-up resistors of roughly 10 kΩ to V3P3D (to ensure operation in BROWNOUT mode) should be used

for both SCL and SDA signals. The

DIO_EEX

register in I/O RAM must be set to 01 in order to convert

the DIO pins DIO4 and DIO5 to I

2

C pins SCL and SDA.

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