PT6314-001L PTC [Princeton Technology Corp], PT6314-001L Datasheet - Page 14
PT6314-001L
Manufacturer Part Number
PT6314-001L
Description
Dot Character VFD Controller/Driver IC
Manufacturer
PTC [Princeton Technology Corp]
Datasheet
1.PT6314-001L.pdf
(49 pages)
- Current page: 14 of 49
- Download datasheet (2Mb)
Dot Character VFD Controller/Driver IC
BUSY FLAG (READ BF FLAG)
The Busy Flag Data (DB7) always outputs “0”.
ADDRESS COUNTER (AC)
The Address Counter (AC) designates the addresses of the DDRAM and CGRAM. When an address
of instruction is written into the Instruction Register, the address information is sent from the Instruction
Register (IR) to the Address Counter. The selection of either the DRAM or CGRAM is also determined
concurrently by the instruction. After writing into the DDRAM or CGRAM, the Address Counter is
increased by 1. (The Address Counter is decreased by 1 after data is read from the DDRAM or
CGRAM.) The contents of the Address Counter are then outputted to the DB0~DB6 when RS=”0” and
R/W=”1”. Please refer to the table below.
PT6314 V1.3
Common
RS
0
0
1
1
M68
R/W
0
1
0
1
/RD
1
0
1
0
I80
/WR
0
1
0
1
Write IR Data as internal operation (i.e. display clear)
Read data to busy flag (DB7) and Address Counter
- 14 -
Write DR Data (DR→DDRAM/CGRAM)
Read DR Data (DDRAM/CGRAM→DR)
Register Selection
(DB6 to DB0)
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
Tel: 886-2-66296288
March, 2006
PT6314
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