EM78P569 View Datasheet(PDF) - ELAN Microelectronics
Part Name
Description
MFG CO.
'EM78P569' PDF : 58 Pages View PDF
EM78P569
8-bit OTP Micro-controller
Bit 1 : (undefined) not allowed to use
Bit 2(ADPWR) : AD converter power control, 1/0 enable/disable
Bit 3 ~ Bit 4 (ADCLK0 ~ ADCLK1) : AD circuit ‘s sampling clock source.
For PLL clock = 895.658kHz ~17.9MHz (CLK2~CLK0 = 001 ~ 110)
ADCLK1 ADCLK0 Sampling rate Operation voltage
0
0
74.6K
>=3.5V
0
1
37.4K
>=3.0V
1
0
18.7K
>=2.5V
1
1
9.3K
>=2.5V
For PLL clock = 447.829kHz (CLK2~CLK0 = 000)
ADCLK1 ADCLK0 Sampling rate Operation voltage
0
0
37.4K
>=3.0V
0
1
18.7K
>=3.0V
1
0
9.3K
>=2.5V
1
1
4.7K
>=2.5V
This is a CMOS multi-channel 10-bit successive approximation A/D converter.
Features
74.6kHz maximum conversion speed at 5V.
Adjusted full scale input
External reference voltage input or internal(VDD) reference voltage
6 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
PLL
fpll
Programmable
divider
fs
1/Mx
Divider fadc
Nx
ADCLK1~ADCLK0
10-bit
ADC
ADC output
ENPLL
CLK2 ~ CLK0
Fig.13 ADC sampling clock control logic
fpll
Mx
fs
fadcon = fadc / 12
Nx = 1
Nx = 2
Nx = 4
Nx = 8
14.331MHz
16
895.658kHz 74.638kHz 37.391kHz 18.659khz 9.329kHz
10.747MHz
12
895.658kHz 74.638kHz 37.391kHz 18.659khz 9.329kHz
7.165MHz
8
895.658kHz 74.638kHz 37.391kHz 18.659khz 9.329kHz
3.582MHz
4
895.658kHz 74.638kHz 37.391kHz 18.659khz 9.329kHz
1.791MHz
2
895.658kHz 74.638kHz 37.391kHz 18.659khz 9.329kHz
895.658kHz
1
895.658kHz 74.638kHz 37.391kHz 18.659khz 9.329kHz
447.829kHz
1
447.829kHz 37.391kHz 18.659khz 9.329kHz 4.665kHz
Bit 5 ~ Bit 7(IN0~ IN2) : Input channel selection of AD converter
These two bits can choose one of three AD input.
IN2
IN1
IN0
Input
0
0
0
AD1
0
0
1
AD2
0
1
0
AD3
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to be changed without notice.
35
8/19/2004 V4.4
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