Yamaha DVD-S2700 Service Manual page 18

DVD-S2700
IC13: ST72F321R (MAIN P.C.B.)
Microprocessor
* No replacement part available.
RESET
V
EVD
OSC1
OSC2
PF7:0
(8-bits)
PE7:0
(8-bits)
PD7:0
(8-bits)
V
AREF
V
ARTCLK /(HS) PB4
18
Device Block Diagram
8-BIT CORE
ALU
CONTROL
V
PP
TLI
V
SS
LVD
DD
AVD
OSC
MCC/RTC/BEEP
PORT F
TIMER A
BEEP
PORT E
SCI
PORT D
10-BIT ADC
SSA
(HS) PE4
(HS) PE5
(HS) PE6
(HS) PE7
PWM3 / PB0
PWM2 / PB1
ei2
PWM1 / PB2
PWM0 /PB3
ARTIC1 / PB5
ei3
ARTIC2 / PB6
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
V
PA3 (HS)
PA2
ei0
PA1
PA0
PC7 / SS / AIN15
ST72F321R
PC6 / SCK / ICCCLK
TOP VIEW
PC5 / MOSI / AIN14
PC4 / MISO / ICCDATA
PC3 (HS) / ICAP1_B
PC2 (HS) / ICAP2_B
PC1 / OCMP1_B / AIN13
PC0 / OCMP2_B / AIN12
V
ei1
V
PA7:0
(8-bits)
PB7:0
(8-bits)
PC7:0
(8-bits)
_1
SS
_1
DD
_
SS 0
_
DD 0