16
µ
PD78214 Sub-Series
1.4 EXAMPLE APPLICATION SYSTEM (PRINTER)
M P00-P03
M P04-P07
TO
SCK
SO
TXD
RXD
Ports
AVREF
AVSS
AN0
AN1
AN2-AN7
Temperature sensor
Motor supply voltage
SW input for each mode
RESET
X1 X2
VSS
VDD
A8-A15
ASTB
AD0-AD7
REFRQ
WR
RD
A16-A19
PD78214
µ
Decoder
Latch
Data bus
Address bus
Gate array
I/O expansion
Centronics interface, etc.
PROM
PD27C256A

µ

Pseudo SRAM
PD24C1000

µ

Kanji character
generator
Print head driver
Shift register
RS-232C
driver
Stepping motor
Carriage motor
Paper feed motor