EPVP6810 Datasheet, PDF (7/50 Pages) ELAN Microelectronics Corp – VFD Controller

ePVP6810
VFD Controller
1 General Description
The ePVP6810 is an 8-bit RISC type vacuum fluorescent display (VFD) controller equipped
with low power consumption and high speed CMOS technology. This integrated single chip
features on_chip watchdog timer (WDT), one time programming ROM (OTP), data RAM,
programmable real time clock/counter, internal interrupt, power down mode, 10-bit A/D
converter, IR detector, and high voltage output for VFD application.
2. Feature
2.1 CPU
Clock source Crystal Oscillator
Crystal Oscillator (32.768KHz): with a external crystal
4k x 13 on chip Program ROM.
128 x 8 on chip data RAM
144 x 8 general purpose registers
16 level stack for subroutine nesting
5 channel 8-bit counters: real time clock/counter (TCC) ,COUNTER1, COUNTER3,
COUNTER4, COUNTER5
1 channel 16-bit counter: COUNTER2
On-chip watchdog timer (WDT)
99.9 single instruction cycle commands
Four operation modes
Mode
CPU Status Main Clock
32.768kHz Clock
Status
Description
Sleep mode
Idle mode
Turn off
Turn off
Turn off
Turn off
Turn off
Turn on
RA(6) = 0
RA(7) = 0 + "SLEP" instruction
RA(6) = 0
RA(7) = 1 +"SLEP" instruction.
Green mode
Normal mode
Turn on
Turn on
Turn off
Turn on
Turn on
Turn on
RA(6) = 0
RA(6) = 1
* Main clock can be programmed from 447.829k to 17.91MH by internal PLL
* 8 main clocks: 447.829K, 895.658K, 1.791M , 3.582M , 7.165M , 10.747M ,
14.331M and 17.91MHz
12 interrupt source, 5 external (IR , INT1~INT4 ), 8 internal ( ADC, TCC, COUNTER1~5)
2.2 GPIO
GPIO 9 Port(8 bit): general purpose input/output; LED output ; interrupt function
GPIO B Port(7 bit): general purpose input/output for power down/MPEG power/Reset
control
GPIO C Port(4 bit): general purpose input/output for switch and key scanning (6x4 matrix)
2.3 ADC
This specification is subject to change without further notice.
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