Yamaha DVD-S1700 Service Manual page 21

IC41: ST72F321R (MAIN P.C.B.)
Microprocessor
* No replacement part available.
RESET
V
PP
TLI
V
SS
V
DD
EVD
OSC1
OSC2
PF7:0
(8-bits)
PE7:0
(8-bits)
PD7:0
(8-bits)
V
AREF
V
SSA
PWM3 / PB0
PWM2 / PB1
PWM1 / PB2
ARTCLK /(HS) PB4
ARTIC1 / PB5
ARTIC2 / PB6
Device Block Diagram
8-BIT CORE
ALU
CONTROL
LVD
AVD
OSC
MCC/RTC/BEEP
PORT F
TIMER A
BEEP
PORT E
SCI
PORT D
10-BIT ADC
(HS) PE4
(HS) PE5
(HS) PE6
(HS) PE7
ei2
ST72F321R
PWM0 /PB3
TOP VIEW
ei3
PB7
AIN0 / PD0
AIN1 / PD1
AIN2 / PD2
AIN3 / PD3
PROGRAM
MEMORY
(16K - 60K Bytes)
RAM
(512 - 2048 Bytes)
WATCHDOG
I2C
PORT A
PORT B
PWM ART
PORT C
TIMER B
SPI
V _1
SS
V _1
DD
PA3 (HS)
PA2
ei0
PA1
PA0
PC7 / SS / AIN15
PC6 / SCK / ICCCLK
PC5 / MOSI / AIN14
PC4 / MISO / ICCDATA
PC3 (HS) / ICAP1_B
PC2 (HS) / ICAP2_B
PC1 / OCMP1_B / AIN13
PC0 / OCMP2_B / AIN12
V _
ei1 SS 0
V _
DD 0
DVD-S1700
PA7:0
(8-bits)
PB7:0
(8-bits)
PC7:0
(8-bits)
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