em78p5830aa ELAN Microelectronics Corp, em78p5830aa Datasheet - Page 25

• Manufacturer Part Number: em78p5830aa
• Description: 8-bit Micro-controller 8-bit Micro-controller
• Manufacturer: ELAN Microelectronics Corp

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* This specification is subject to be changed without notice.
Bit 5 ~ Bit 7(IN0~ IN2) : Input channel selection of AD converter
This is a CMOS multi-channel 10-bit successive approximation A/D converter.
Features
These two bits can choose one of three AD input.
For PLL clock = 895.658kHz ~ 14.3MHz (CLK2~CLK0 = 001 ~ 111)
For PLL clock = 447.829kHz (CLK2~CLK0 = 000)
895.658kHz
447.829kHz
14.331MHz
10.747MHz
ADCLK1 ADCLK0
ADCLK1 ADCLK0
7.165MHz
3.582MHz
1.791MHz
IN2
0
0
0
0
1
1
1
1
74.6kHz maximum conversion speed at 5V.
Adjusted full scale input
External reference voltage input or internal(VDD) reference voltage
4 analog inputs multiplexed into one A/D converter
Power down mode for power saving
A/D conversion complete interrupt
Interrupt register, A/D control and status register, and A/D data register
fpll
0
0
1
1
0
0
1
1
IN1
0
0
1
1
0
0
1
1
ENPLL
0
1
0
1
0
1
0
1
PLL
Mx
16
12
8
4
2
1
1
IN0
0
1
0
1
0
1
0
1
fpll
Sampling rate
Sampling rate
Programmable
74.6K
37.4K
18.7K
37.4K
18.7K
CLK2 ~ CLK0
9.3K
4.7K
9.3K
895.658kHz
895.658kHz
895.658kHz
895.658kHz
895.658kHz
895.658kHz
447.829kHz
divider
1/Mx
Fig.9 ADC voltage control logic
Input
AD3
AD4
AD5
AD6
fs
-
-
-
-
fs
ADCLK1~ADCLK0
Operation voltage
Operation voltage
Divider
74.638kHz
74.638kHz
74.638kHz
74.638kHz
74.638kHz
74.638kHz
37.391kHz
23
Nx
Nx = 1
>=3.5V
>=3.0V
>=2.5V
>=2.5V
>=3.0V
>=3.0V
>=2.5V
>=2.5V
fadc
10-bit
ADC
37.391kHz
37.391kHz
37.391kHz
37.391kHz
37.391kHz
37.391kHz
18.659khz
Nx = 2
fadcon = fadc / 12
Not select
Not select
Not select
Not select
ADC output
P62
P63
P64
P65
Pin
18.659khz
18.659khz
18.659khz
18.659khz
18.659khz
18.659khz
9.329kHz
Nx = 4
8-bit Micro-controller
12/1/2004 V1.6
EM785830AA
9.329kHz
9.329kHz
9.329kHz
9.329kHz
9.329kHz
9.329kHz
4.665kHz
Nx = 8