HK 3380 (serv.man9) - Harman Kardon Audio Service Manual (repair manual). Page 26

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HVIST72F321R (U-COM)   :   IC81
 
Figure 1. Device Block Diagram
8-BIT CORE
ALU
AD
D
R
ES
S AN
D
 D
AT
A B
U
S
OSC1
V
PP
CONTROL
PROGRAM
(16K - 60K Bytes)
V
DD
RESET
PORT F
PF7:0
(8-bits)
TIMER A
BEEP
PORT A
RAM
(512 - 2048 Bytes)
PORT C
10-BIT ADC
V
AREF
V
SSA
PORT B
PB7:0
(8-bits)
PWM ART
PORT E
PE7:0
(8-bits)
SCI
TIMER B
PA7:0
(8-bits)
PORT D
PD7:0
(8-bits)
SPI
PC7:0
(8-bits)
V
SS
WATCHDOG
TLI
OSC
LVD
OSC2
MEMORY
MCC/RTC/BEEP
EVD
AVD
I2C
3
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