EM78R911 Ver la hoja de datos (PDF) - ELAN Microelectronics

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EM78R911

8-bit micro-controller

ELAN Microelectronics 

EM78911

8-bit micro-controller

* Bit 2~4 (Bias1~Bias3) Control bits used to choose LCD operation voltage .

LCD operate voltage Vop (VDD 5V)

VDD=5V

000

0.60VDD

3.0V

001

0.66VDD

3.3V

010

0.74VDD

3.7V

011

0.82VDD

4.0V

100

0.87VDD

4.4V

101

0.93VDD

4.7V

110

0.96VDD

4.8V

111

1.00VDD

5.0V

* Bit5:port6 switch , 0/1= normal I/O port/COMMON output

* Bit6:port9 low nibble switch , 0/1= normal I/O port/SEGMENT output . Bit7:port9 high nibble switch

PAGE1 :

7

6

5

4

3

2

1

0

OP77 OP76 C2S C1S PSC1 PSC0 CDRD

0

* Bit0: unused

* Bit1: cooked data or raw data select bit , 0/1 ==> cooked data/raw data

* Bit3~Bit2: counter1 prescaler , reset=(0,0)

(PSC1,PSC0) = (0,0)=>1:1 , (0,1)=>1:4 , (1,0)=>1:8 , (1,1)=>reserved

* Bit4:counter1 source , (0/1)=(32768Hz/3.579MHz if enable) scale=1:1

* Bit5:counter2 source , (0/1)=(32768Hz/3.579MHz if enable) scale=1:1

* Bit6:P76 opendrain control (0/1)=(disable/enable)

* Bit7:P77 opendrain control (0/1)=(disable/enable)

10. IOCF (Interrupt Mask Register)

7

6

INT3

FSK/CW

5

4

321

0

C8_2 C8_1 INT2 INT1 INT0 TCIF

* Bit 0 ~ 7 interrupt enable bit.

0: disable interrupt

1: enable interrupt

* IOCF Register is readable and writable.

VII.3 TCC/WDT Prescaler

There is an 8-bit counter available as prescaler for the TCC or WDT. The prescaler is available for the TCC only or

WDT only at the same time.

• An 8 bit counter is available for TCC or WDT determined by the status of the bit 3 (PAB) of the CONT register.

• See the prescaler ratio in CONT register.

• Fig. 10 depicts the circuit diagram of TCC/WDT.

• Both TCC and prescaler will be cleared by instructions which write to TCC each time.

• The prescaler will be cleared by the WDTC and SLEP instructions, when assigned to WDT mode.

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