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EPVP6200 Datasheet(PDF) 30 Page - ELAN Microelectronics Corp

Part No. EPVP6200
Description  VFD Controller
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Maker  EMC [ELAN Microelectronics Corp]
Homepage  http://www.emc.com.tw
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ePVP6200
VFD Controller
24 of 57
11.18.2004 (V1.53)
This specification is subject to change without further notice.
Bit 7 (CNT2S) : COUNTER2 clock source
0
16.384kHz
timing = ( 1 /16.384k) * prescaler * (256 – count vaule)
1
system clock
timing = ( 2 / system clock) * prescaler* (256 – count vaule)
7.3.5 IOC9 (PORT9 I/O Control)
a) PAGE 0 (PORT9 I/O Control Register)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IOC97
IOC96
IOC95
IOC94
IOC93
IOC92
IOC91
IOC90
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
Bit 0 ~ Bit 7 (IOC90 ~ IOC97) : PORT9 (0~7) I/O direction control register
0
set the relative I/O pin as output
1
set the relative I/O pin into high impedance
b) PAGE 1 ( Clock Source and Prescaler for COUNTER3 and COUNTER4)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CNT4S
C4_PSC2 C4_PSC1 C4_PSC0
CNT3S
C3_PSC2 C3_PSC1 C3_PSC0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
Bit 0 ~ Bit 2 (C3_PSC0 ~ C3_PSC2) : COUNTER3 prescaler ratio
C3_PSC2
C3_PSC1
C3_PSC0
COUNTER3
0
0
0
1:2
0
0
1
1:4
0
1
0
1:8
0
1
1
1:16
1
0
0
1:32
1
0
1
1:64
1
1
0
1:128
1
1
1
1:256
Bit 3 (CNT3S) : COUNTER3 clock source
0
16.384kHz
timing = ( 1 /16.384k) * prescaler * (256 – count vaule)
1
system clock
timing = ( 2 / system clock) * prescaler* (256 – count vaule)
Bit 4 ~ Bit 6 (C4_PSC0 ~ C4_PSC2) : COUNTER4 prescaler ratio
C4_PSC2
C4_PSC1
C4_PSC0
COUNTER4
0
0
0
1:2
0
0
1
1:4
0
1
0
1:8
0
1
1
1:16
1
0
0
1:32
1
0
1
1:64




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