EPVP6810 Datasheet, PDF (25/50 Pages) ELAN Microelectronics Corp – VFD Controller

ePVP6810
VFD Controller
7.2.13 RC (PORTC I/O Data , Counter5 Data)
a) PAGE 0 I/O Data Buffer/Serial Signal
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
PC7
PC6
PC5
PC4
PC3
-
-
-
-
R/W
Bit 2
PC2
R/W
Bit 1
PC1
R/W
Bit 0
PC0
R/W
Bit 0 ~ Bit 3 :1. PC0 ~ PC3 are defined as Input/Output
2. KEY1 ~ KEY4 are defined as Keyscan Input
n
b) PAGE 1 (PORTC, Pull High)
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
R/W-0 R/W-0 R/W-0 R/W-0
Bit 3
PHC3
R/W-0
Bit 2
PHC2
R/W-0
Bit 1
PHC1
R/W-0
Bit 0
PHC0
R/W-0
Bit 0 ~ Bit 7 (PHC0 ~ PHC7) : PORTC Bit0 ~ Bit7 pull high control register
0 disable pull high function.
1 enable pull high function
d) PAGE 2 (Counter5 Data Register)
Bit 7
CN57
Bit 6
CN56
Bit 5
CN55
Bit 4
CN54
Bit 3
CN53
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
Bit 2
CN52
R/W-0
Bit 1
CN51
R/W-0
Bit 0
CN50
R/W-0
Bit 0 ~ Bit 7 (CN50 ~ CN57) : Counter5 buffer that you can read and write.
Counter5 is an 8-bit up-counter with 8-bit prescaler that allows
you to use RC PAGE2 to preset and read the counter (write
preset). After an interruption, it will reload the preset value.
7.2.14 RD (Interrupt Flag,)
a) PAGE 0 (Interrupt Flags Register)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
-
-
-
-
CNT5
CNT4
CNT3
-
-
-
-
-
R/W-0 R/W-0 R/W-0
NOTE: "1" means interrupt request, "0" means non-interrupt
Bit 0 (CNT3) : Counter3 timer overflow interrupt flag. Set when counter3 timer overflows.
Bit 1 (CNT4) : Counter4 timer overflow interrupt flag. Set when counter4 timer overflows.
Bit 2 (CNT5) : Counter5 timer overflow interrupt flag. Set when counter5 timer overflows.
This specification is subject to change without further notice.
11.28.2004 (V1.23)19 of 50