EM78M612
Universal Serial Bus Microcontroller Series
8.9.2 Control Register
R8S (PWM1 Duty Cycle Register)
A specified value keeps the output of PWM1 to remain at high within a Period.
R9S (PWM2 Duty Cycle Register)
A specified value keeps the output of PWM2 to remain at high within a Period.
IOC8S (PWM Control Register) Default Value: (0B_0000_0111)
7
6
5
-
4
-
3
-
2
PS2
1
PS1
0
PS0
PEN2 PEN1
IOC8S [0~2] PWM Clock Prescaler.
Fosc = 6MHz (No matter Xtal is 6MHz or 12MHz)
PS2
0
0
0
0
1
1
1
1
PS1
0
0
1
1
0
0
1
1
PS0
0
1
0
1
0
1
0
1
Clock(Hz)
Fosc/3
Fosc/6
Fosc/12
Fosc/24
Fosc/48
Fosc/96
Fosc/192
Fosc/384
Period/255
0.5us
1us
2us
4us
8us
16us
32us
64us
IOC8S [6,7] PWM1/PWM2 Enable Bit
0:Disable
1:Enable
8.10 Analog-To-Digital Converter (ADC)
8.10.1 Function Description
The Analog to Digital converter consists of a 5-bit analog multiplexer, one Control Register
(IOCAS), one AD Channel Select Register (RAS), and two data registers (RBS & RCS) for
10-bit resolution
The ADC module utilizes successive approximation to convert the unknown analog signal to
a digital value. The result is fed to the ADDATA. Input channels are selected by the analog
input multiplexer via the ADCS/RAS bits AD0~AD4.
This specification may change without further notice.
2004/4/28 V1.1
33
ELAN [ ELAN MICROELECTRONICS CORP ]
