34
TK-690H
(
B
)
Flash ROM : AT29C020-90TI (Control Unit IC519)
• Terminal description
Pin Name
Function
A0~A17
Addresses
CE
Chip enable
OE
Output enable
WE
Write enable
I/O0~I/O7
Data inputs/outputs
NC
No connect
OE, CE, AND WE
LOGIC
Y DECODER
X DECODER
DATA LATCH
INPUT/OUTPUT
BUFFERS
OPTIONAL BOOT
BLOCK (8K BYTES)
MAIN MEMORY
(240K BYTES)
OPTIONAL BOOT
BLOCK (8K BYTES)
Y-GATING
OE
WE
CE
Address
input
Vcc
GND
Data inputs/outputs
I/O0~I/O7
• Block diagram
SEMICONDUCTOR DATA / DESCRIPTION OF COMPONENTS
Final Amplifier : 2SC2694 (Final Unit Q9, Q10)
• Absolute maximum ratings
Tc= 25
°
C unless otherwise noted
Symbol
Parameter
Condition
Rating
V
CBO
Collector-base voltage
35V
V
EBO
Emitter-base voltage
4V
V
CEO
Collector-emitter voltage
R
BE
=
∞
17V
Ic
Collector current
20A
Pc
Collector dissipation
140W
Tj
Junction temperature
175
°
C
Tstg
Storage temperature
–55 to 175
°
C
Final Unit (X45-3550-XX)
-10 : K
-11 : K2
-12 : K3
Ref. No.
Use/Function
Operation/Condition
Q1
TX drive amplifier
Q2
DC amplifier
APC controller
Q3,4
DC switch
Q5
TX drive amplifier
Q6
APC controller
Q7
DC amplifier
APC controller
Q8
APC comparator
APC controller
Q9
Final amplifier
Q10
Final amplifier
Q11
DC switch
D1
Temperature
compensation
D2~4
Antenna switch
D5
Protector
D6
Reflected wave
rectification
D7
Surge absorption
D8
Protection of reverse
connection
D9
Forward wave
rectification
D10
Antenna switch
TX-RX Unit (X57-5600-XX) (A/2)
-10 : K
-11 : K2
-12 : K3
Ref. No.
Use/Function
Operation/Condition
IC101
FM IC
1, 2 : Oscillator (11.155MHz)
3 : Mixer output
4 : Vcc
5 : IF input (455kHz)
7 : Noise filter output
8 : Noise filter input
9 : DET output (AF OUT)
10 : Quad input
12 : RSSI output
16 : Input (10.7MHz)
IC201
Shift register
IC202
AVR
Input : 8V
Output : 5V
IC203
AVR
Input : SB
Output : 9V