EM78811 View Datasheet(PDF) - ELAN Microelectronics
Part Name
Description
Manufacturer
EM78811 Datasheet PDF : 33 Pages
| |||
EM78811
8-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
• Bit 1 :PORT7 PULL HIGH register option. Please use defaut value.
• Bit 2~4 (Bias1~Bias3) Control bits used to choose LCD operation voltage.
LCD operate voltage
000
001
010
011
100
101
110
111
Vop (VDD 5V)
0.60VDD
0.66VDD
0.74VDD
0.82VDD
0.87VDD
0.93VDD
0.96VDD
1.00VDD
VDD=5V
3.0V
3.3V
3.7V
4.0V
4.4V
4.7V
4.8V
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
OD7
OD6
C2S
C1S
PSC1
PSC0 CDRD
-
• 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)=>1:2 , (1,0)=>1:4 , (1,1)=>1:8
• Bit4:counter1 source , (0/1)=(32768Hz/3.679MHz if enable) scale=1:1
• Bit5:counter2 source , (0/1)=(32768Hz/3.679MHz if enable) scale=1:1
• Bit6: PORT7(6) open drain control, 0/1=disable/enable
• Bit7: PORT7(7) open drain control, 0/1=disable/enable
IOCF (Interrupt Mask Register)
7
6
5
INT3
FSKDATA C8-2
• Bit 0 ~ 7 interrupt enable bit.
0: disable interrupt
1: enable interrupt
• IOCF Register is readable and writable.
4
C8-1
3
INT2
2
INT1
1
INT0
0
TCIF
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. 12 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.
• The prescaler will not be cleared by the SLEP instruction, when assigned to TCC mode.
* This specification are subject to be changed without notice.
10.12.1998 14
Share Link: 