EM6821 datasheet(59/68 Pages) EMMICRO

59 / 68 page

EM6821

www.emmicroelectronic.com

18.1.5 Voltage Regulator Option

By default the internal voltage regulator supplies the

core logic the RAM and the ROM Mvreg(yes). With

option MVreg(No) the regulator is cut and Vbat is

supplying the core logic the ROM and the RAM.

18.1.6 Debouncer Frequency Option

By default the debouncer frequency is Ck[11]. The

user may choose Ck[14] instead of Ck[11].

Ck[14 ]corresponds to maximum 0.25ms debouncer

time in case of a 32kHz oscillator.

18.1.7 User defined LCD Segment Allocation

If using a different Segment allocation from the one described in chapter 14.3 , one needs to fill in following

table. The Segment allocation connection are realized with the interconnect Metal2 mask.

4 times MUX

COM[1]

COM[2]

COM[3]

COM[4]

3 times MUX

COM[1]

COM[2]

COM[3]

SEG[1]

SEG[2]

SEG[3]

SEG[4]

SEG[5]

SEG[6]

SEG[7]

SEG[8]

SEG[9]

SEG[10]

SEG[11]

SEG[12]

SEG[13]

SEG[14]

SEG[15]

SEG[16]

SEG[17]

SEG[18]

SEG[19]

SEG[20]

The customer should specify the required options at the time of ordering. A copy of the pages 56 to

59, as well as the « Software ROM characteristic file » generated by the assembler (*.STA) should be

attached to the order.

Option

Name

Default

Value

User

Value

MVreg

Voltage Regulator

YES

Option

Name

Default

Value

User

Value

MDeb

Debouncer freq.

Ck[11]

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