HT95A200/20P/300/30P
Preliminary
Features
·
Provide MASK type and OTP type version
·
Operating voltage range: 2.4V~5.5V
·
Program ROM:
-
HT95A300/30P: 8K´16 bits
-
HT95A200/20P: 4K´16 bits
·
Data RAM:
-
HT95A300/30P: 2112´8 bits
-
HT95A200/20P: 1152´8 bits
·
28 bidirectional I/O lines
·
16-bit table read instructions
·
Eight-level subroutine nesting
·
Timer:
-
Two 16-bit programmable Timer/Event Counter
-
Real time clock (RTC)
-
Watchdog Timer (WDT)
·
Programmable frequency divider (PFD)
·
Dual system clock: 32768Hz, 3.58MHz
·
Four operating modes: Idle mode, Sleep mode,
8-Bit I/O Type Phone Controller MCU
Green mode and Normal mode
·
Up to 1.117ms instruction cycle with 3.58MHz system
clock
·
Built-in 3.58MHz DTMF Generator
·
All instructions in one or two machine cycles
·
Built-in dialer I/O
·
48-pin SSOP package
Applications
·
Cordless Phone
·
Fax and answering machines
·
Other communication system
General Description
The HT95A200/20P/300/30P are 8-bit high perfor-
mance RISC-like microcontrollers with built-in DTMF
generator and dialer I/O which provide MCU dialer im-
plementation or system control features for telecom
product application. The phone controller has a built-in
program ROM, data RAM and 28 I/O lines for high end
products design. In addition, for power management
purpose, it has a built-in frequency up conversion circuit
(32768Hz to 3.58MHz) which provides dual system
clock and four types of operation modes. For example it
can operate with low speed system clock rate of
32768Hz in green mode with little power consumption. It
can also operate with high speed system clock rate of
3.58MHz in normal mode for high performance opera-
tion. To ensure smooth dialer function and to avoid MCU
shut-down in extreme low voltage situation, the dialer
I/O circuit is built-in to generate hardware dialer signals
such as on-hook, hold-line and hand-free. Built-in real
time clock and programmable frequency divider are pro-
vided for additional fancy features in product develop-
ments. The device is best suitable for phone products
that comply with versatile dialer specification require-
ments of different areas or countries.
Rev. 0.10
1
October 1, 2002
Preliminary
Selection Table
Part No.
HT95A200
HT95A20P
HT95A300
HT95A30P
HT95L100
HT95L10P
HT95L200
HT95L20P
HT95L300
HT95L30P
HT95C200
HT95C20P
HT95C300
HT95C30P
Operating Program
Data
Normal Dialer
Voltage
Memory Memory
I/O
I/O
2.4V~5.5V
2.4V~5.5V
2.4V~5.5V
2.4V~5.5V
2.4V~5.5V
2.4V~5.5V
2.4V~5.5V
4K´16
8K´16
4K´16
8K´16
8K´16
8K´16
8K´16
1152´8
2112´8
1152´8
1152´8
2112´8
1152´8
2112´8
28
28
16~20
20~28
16~28
20~28
16~28
8
8
8
8
8
8
8
LCD
¾
¾
16´8~20´8
24´8~24´16
36´16~48´16
24´8~24´16
36´16~48´16
Timer
16-bit´2
16-bit´2
16-bit´2
16-bit´2
16-bit´2
16-bit´2
16-bit´2
Stack
8
8
8
8
8
8
8
HT95A200/20P/300/30P
External
Interrupt
4
4
4
4
4
4
4
DTMF
Generator
Ö
Ö
Ö
Ö
Ö
Ö
Ö
FSK
Receiver
¾
¾
¾
¾
¾
Ö
Ö
Package
48SSOP
48SSOP
64QFP
100QFP
100QFP
128QFP
128QFP
Note: Part numbers suffixed with
²P²
are OTP devices, all others are mask version devices.
Block Diagram
P o w e r D o w n
D e te c to r &
R e s e t C ir c u it
P ro g ra m
C o u n te r
P ro g ra m
R O M
S T A
S T A
S T A
S T A
S T A
S T A
S T A
S T A
C K 0
C K 1
C K 2
C K 3
C K 4
C K 5
C K 6
C K 7
IN T
In te rru p t
C ir c u it
IN T C 0
IN T C 1
T M R 0
T M R 0 C
M P 0
M P 1
M
U
X
D A T A
M e m o ry
P A
P A C
In s tr u c tio n
D e c o d e r
A L U
T im in g
G e n e ra to r
A C C
S h ifte r
M U X
P B
P B C
S T A T U S
P D
P D C
P E
P E C
O S C C ir c u it
3 2 7 6 8 H z
W D T O S C
S y s te m C lo c k /4
M
U
X
W D T S
W D T P r e s c a le r
D T M .
G e n e ra to r
3 .5 8 M H z
3 2 7 6 8 H z
o r 3 .5 8 M H z /4
P . D
P o w e r
S u p p ly
M U S IC
D T M .
M
U
X
c lo c k /4
T M R 1
T M R 1 C
M
U
X
3 2 7 6 8 H z
T M R 0
T M R 1
R E S
3 2 7 6 8 H z
R T C
In s tr u c tio n
R e g is te r
S y s te m
P A 0 ~ P A 7
P B 0 ~ P B 7
P D 0 ~ P D 7
P E 0 ~ P E 3
X 1
X 2
X C
H . I
H . O
H D I
H D O
H K S
P O
D N P O
X M U T E
V D D
V S S
D ia le r I/O
Rev. 0.10
2
October 1, 2002
Preliminary
Pin Assignment
P A 3
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
P A 2
P A 1
P A 0
P B 7
P B 6
P B 5
P B 4
V S S
P B 3
P B 2
P B 1
P B 0
P D 7
P D 6
P D 5
P D 4
P D 3
P D 2
P D 1
P D 0
IN T
T M R 0
T M R 1
4 8
4 7
4 6
4 5
4 4
4 3
4 2
4 1
4 0
3 9
3 8
3 7
3 6
3 5
3 4
3 3
3 2
3 1
3 0
2 9
2 8
2 7
2 6
2 5
P A 4
P A 5
P A 6
P A 7
X 2
X 1
X C
N C
V D D
R E S
D T M .
H . I
H . O
H D I
H D O
X M U T E
D N P O
P O
H K S
P E 3
P E 2
P E 1
P E 0
M U S IC
HT95A200/20P/300/30P
H T 9 5 A 2 0 0 /2 0 P /3 0 0 /3 0 P
4 8 S S O P -A
Pin Description
Pin Name
CPU
VDD
VSS
X1
X2
XC
RES
INT
¾
¾
I
O
I
I
I
Positive power supply
Negative power supply, ground
A 32768Hz crystal (or resonator) should be connected to this pin and X2.
A 32768Hz crystal (or resonator) should be connected to this pin and X1.
External low pass filter used for frequency up conversion circuit.
Schmitt trigger reset input, active low.
Schmitt trigger input for external interrupt.
No internal pull-high resistor.
Edge trigger activated on a falling edge.
Schmitt trigger input for Timer/Event Counter 0.
No internal pull-high resistor.
Activated on falling or rising transition edge, selected by software.
Schmitt trigger input for Timer/Event Counter 1.
No internal pull-high resistor.
Activated on falling or rising transition edge, selected by software.
I/O
Description
TMR0
I
TMR1
I
Rev. 0.10
3
October 1, 2002
Preliminary
Pin Name
Normal I/O
PA0~PA7
I/O
I/O
Description
HT95A200/20P/300/30P
Bidirectional 8-bit input/output ports.
Schmitt trigger input or CMOS output.
See mask option table for pull-high and wake-up function
Bidirectional 8-bit input/output ports.
Schmitt trigger input or CMOS output.
See mask option table for pull-high function
Bidirectional 8-bit input/output ports.
Schmitt trigger input and CMOS output.
See mask option table for pull-high function
Bidirectional 4-bit input/output ports.
Schmitt trigger input and CMOS output.
See mask option table for pull-high function
PB0~PB7
I/O
PD0~PD7
I/O
PE0~PE3
I/O
Dialer I/O (See the
²Dialer
I/O function²)
HFI
HFO
HDI
HDO
HKS
PO
DNPO
XMUTE
Peripherals
DTMF
MUSIC
O
O
This pin outputs dual tone signals to dial out the phone number. The load resistor should
not be less than 5kW.
This pin outputs the single tone that generated by the PFD generator.
I
O
I
O
I
O
O
O
Schmitt trigger input structure. An external RC network is recommended for input
debouncing.
This pin is pulled low with internal resistance of 200kW typ.
CMOS output structure.
Schmitt trigger input structure. An external RC network is recommended for input
debouncing.
This pin is pulled high with internal resistance of 200kW typ.
CMOS output structure.
This pin detects the status of the hook-switch and its combination with HFI/HDI can con-
trol the PO pin output to make or break the line.
CMOS output structure controlled by HKS and HFI/HDI pins and which determines
whether the dialer connects or disconnects the telephone line.
NMOS output structure.
NMOS output structure. Usually, XMUTE is used to mute the speech circuit when trans-
mitting the dialer signal.
Absolute Maximum Ratings
Supply Voltage ........................................-0.3V to 5.5V
Input Voltage .............................. V
SS
-0.3
to V
DD
+0.3V
Storage Temperature ...........................-50°C to 125°C
Operating Temperature ..........................-25°C to 70°C
Note: These are stress ratings only. Stresses exceeding the range specified under
²Absolute
Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
Rev. 0.10
4
October 1, 2002
Preliminary
Electrical Characteristics
Symbol
CPU
I
IDL
I
SLP
I
GRN
Idle Mode Current
Sleep Mode Current
Green Mode Current
5V
5V
5V
32768Hz off, 3.58MHz off,
CPU off, WDT off, no load
32768Hz on, 3.58MHz off,
CPU off, WDT off, no load
32768Hz on, 3.58MHz off,
CPU on, WDT off, no load
32768Hz on, 3.58MHz on,
CPU on, WDT on,
DTMF generator off, no load
¾
¾
¾
¾
¾
Parameter
Test Conditions
V
DD
Conditions
HT95A200/20P/300/30P
Ta=25°C
Min.
Typ.
Max.
Unit
¾
¾
¾
¾
0
4
4
-2
10
¾
¾
¾
¾
¾
¾
6
-3
30
2
30
50
mA
mA
mA
I
NOR
V
IL
V
IH
I
OL
I
OH
R
PH
Dialer I/O
I
XMO
I
OLXM
I
HKS
R
HFI
R
HDI
I
OH2
I
OL2
I
OH3
I
OL3
I
OH4
I
OL4
I
OL5
Normal Mode Current
I/O Port Input Low Voltage
I/O Port Input High Voltage
I/O Port Sink Current
I/O Port Source Current
Pull-high Resistor
5V
5V
5V
5V
5V
5V
3
1
5
¾
¾
¾
mA
V
V
mA
mA
kW
XMUTE Leakage Current
XMUTE Sink Current
HKS Input Current
HFI Pull-low Resistance
HDI Pull-high Resistance
HFO Source Current
HFO Sink Current
HDO Source Current
HDO Sink Current
PO Source Current
PO Sink Current
DNPO Sink Current
2.5V XMUTE pin=2.5V
2.5V XMUTE pin=0.5V
2.5V HKS pin=2.5V
2.5V V
HFI
=2.5V
2.5V V
HDI
=0V
2.5V V
OH
=2V
2.5V V
OL
=0.5V
2.5V V
OH
=2V
2.5V V
OL
=0.5V
2.5V V
OH
=2V
2.5V V
OL
=0.5V
2.5V V
OL
=0.5V
¾
1
¾
¾
¾
-1
1
-1
1
-1
1
1
¾
¾
¾
200
200
¾
¾
¾
¾
¾
¾
¾
1
¾
0.1
¾
¾
¾
¾
¾
¾
¾
¾
¾
mA
mA
mA
kW
kW
mA
mA
mA
mA
mA
mA
mA
DTMF Generator
V
TDC
V
TOL
V
TAC
R
L
A
CR
THD
DTMF Output DC Level
DTMF Sink Current
DTMF Output AC Level
DTMF Output Load
Column Pre-emphasis
Tone Signal Distortion
¾
¾
¾
¾
¾
¾
V
DTMF
=0.5V
Row group, R
L
=5kW
THD£-23dB
Row group=0dB
R
L
=5kW
¾
0.45V
DD
0.1
120
5
1
¾
¾
¾
155
¾
2
-30
0.7V
DD
¾
180
¾
3
-23
V
mA
mVrms
kW
dB
dB
Rev. 0.10
5
October 1, 2002
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