EPVP6800 Datasheet, PDF (9/47 Pages) ELAN Microelectronics Corp – VFD Controller

5 Functional Block Diagram
ePVP6800
VFD Controller
OSCI
OSCO
OSC
8
GPIO9[0:4]
4
GPIOC[0:4]
GPIO
MCU
OTP
Data RAM
Timer
Segment Driver/
Grid Driver/
High Breakdown
Driver
5 _{P87 (GR1)}
…
P82 (GR5)
4
P77~P76 (GR6~GR7)
…
P73~P72 (GR8~GR9)
4
P66~P67
(GR11/SG7~GR10/SG8)
…
P62~P63 (SG5~SG6)
4
P57 (SG4/KS4)
…
P54 (SG1/KS1)
PLL
IR
Real Time Clock
/RESET PLLC VDD VSS VEE
Fig. 2a Block Diagram
XIN XOUT PLLC
Oscillator
Timing Control
R1(TCC)
WDT
Timer
Prescaler
Data
RAM
Control Sleep
And Wakeup
On I/O port
General
RAM
R4
ROM
Interrupt
Control
Instruction
Register
Instruction
Decoder
Data & Control Bus
R2
R3
R5
STACK
ALU
IOC5
IOC6
IOC7
IOC8
IOC9
IOCC
R5
R6
R7
R8
R9
RC
RB
Port5
(HV)
Port6
(HV)
Port7
(HV)
Port8
(HV)
Port9
PortC
This specification is subject to change without further notice.
Fig. 2b Block Diagram
11.28.2004 (V123) 3 of 47