PT6314-001L PTC [Princeton Technology Corp], PT6314-001L Datasheet - Page 19

• Manufacturer Part Number: PT6314-001L
• Description: Dot Character VFD Controller/Driver IC
• Manufacturer: PTC [Princeton Technology Corp]

Dot Character VFD Controller/Driver IC
CPU INTERFACE (DATA TRANSFER)
M68 PARALLEL DATA TRANSFER
The M68 type of parallel data transfer is selected when IFSEL is set to “1” and MCU is set to “0” Under
this mode, the PT6314 can interface with the CPU in 4 or 8 bits . Please take note that the internal
registers are composed of 8 bits. During data transfer in 4 bits, DB4 to DB7 performs the data transfer
operation two times, the DB0 to DB3 must be set to either “H” or “L”. The higher order 4 bits (D4 to D7)
are initially transferred followed by the lower order 4 bits (D0 toD3). please refer to the diagrams below.
4-Bit M68 TYPE PARALLEL Data Transfer
PT6314 V1.3
R/W
DB7
DB6
DB5
DB4
RS
E
Write Instruction
IR7
IR6
IR5
IR4
IR3
IR2
IR0
IR1
Write Instruction
IR7
IR6
IR5
IR4
IR3
IR2
IR0
IR1
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Read Instruction
BF=0
IR6
IR5
IR4
IR3
IR2
IR0
IR1
URL: http://www.princeton.com.tw
D5
D7
D6
D4
Write Data
Fax: [phone]
Tel: [phone]
March, 2006
D3
D2
D0
D1
PT6314