HD404618 Series
4-Bit Single-Chip Microcomputer
Rev. 6.0
Sept. 1998
Description
The HD404618 Series is designed with the powerful and efficient architecture of the HMCS400 family.
The MCU incorporates a high-precision dual-tone multifrequency (DTMF) circuit, LCD driver/controller,
voltage comparator, and 32-kHz watch oscillator circuit.
The HD404618 Series includes five chips: the HD404612 with 2-kword ROM; the HD404614 with 4-
kword ROM; the HD404616 with 6-kword ROM; the HD404618 with 8-kword ROM; the HD4074618
with 8-kword PROM.
The HD4074618, incorporating PROM, is a ZTAT™ microcomputer that can dramatically shorten system
development periods and smooth the process from debugging to mass production.
ZTAT™ : Zero Turn Around time ZTAT is a trademark of Hitachi Ltd.
Features
•
•
•
•
•
•
2048-word
×
10-bit ROM (HD404612)
4096-word
×
10-bit ROM (HD404614)
6144-word
×
10-bit ROM (HD404616)
8192-word
×
10-bit ROM (HD404618, HD4074618)
1184-digit
×
4-bit RAM
30 I/O pins
10 high-current output pins
CMOS I/O pin circuit configuration
Input/output pull-up MOS can be selected by software
On-chip DTMF generator
LCD controller/driver (32 segments
×
4 commons)
Three timer/counters
Clock-synchronous 8-bit serial interface
Six interrupt sources
Two by external sources
Four by internal sources
•
•
•
•
•
HD404618 Series
•
Subroutine stack up to 16 levels, including interrupts
•
Instruction cycle time
10
µs
(f
OSC
= 400 kHz)
5
µs
(f
OSC
= 800 kHz)
•
Four low-power dissipation modes
Stop mode
Standby mode
Watch mode
Subactive mode
•
Built-in oscillator
Crystal or ceramic oscillator (an external clock also possible)
•
Voltage comparator (2 channels)
•
Two operating modes
MCU mode
PROM mode (HD4074618)
•
Package
80-pin plastic flat package
(FP-80B) (FP-80A)
80-pin plastic thin flat package (TFP-80)
Ordering Information
Type
Mask ROM
Product Name
HD404612
Model Name
HD404612FS
HD404612H
HD404612TF
HD404614
HD404614FS
HD404614H
HD404614TF
HD404616
HD404616FS
HD404616H
HD404616TF
HD404618
HD404618FS
HD404618H
HD404618TF
ZTAT™
HD4074618
HD4074618FS
HD4074618H
HD4074618TF
8,192
8,192
6,144
4,096
ROM (Word)
2,048
Package
FP-80B
FP-80A
TFP-80
FP-80B
FP-80A
TFP-80
FP-80B
FP-80A
TFP-80
FP-80B
FP-80A
TFP-80
FP-80B
FP-80A
TFP-80
2
HD404618 Series
Pin Number
FP-80B
65
66
67
68
69
70
71
72
FP-80A,
TFP-80
63
64
65
66
67
68
69
70
Pin Name
COM1
COM2
COM3
COM4
V
1
V
2
V
3
TONEC
O
I/O
O
O
O
O
Pin Number
FP-80B
73
74
75
76
77
78
79
80
FP-80A,
TFP-80
71
72
73
74
75
76
77
78
Pin Name
TONER
VT
ref
V
CC
OSC
1
OSC
2
RESET
D
0
D
1
I
O
I
I/O
I/O
I/O
O
Note: I/O: Input/output pin, I: Input pin, O: Output pin
Pin Functions
Power Supply
V
CC
:
Apply power voltage to this pin.
GND:
Connect to ground.
TEST:
Used for test purposes only. Connect it to V
CC
.
RESET:
Resets the MCU.
Oscillators
OSC
1
, OSC
2
: Used as pins for the internal oscillator circuit. They can be connected to a ceramic
resonator, or OSC
1
can be connected to an external oscillator circuit.
X1, X2:
Used for a 32.768-kHz crystal oscillator that acts as a clock.
Ports
D
0
–D
13
(D Port):
Input/output port addressable by individual bits. D
0
–D
9
are I/O pins and D
10
–D
13
are
input pins. D
0
–D
9
are high current output pins (15 mA, max.). D
11
–D
13
are also available as voltage
comparators.
R0–R3 (R Ports):
Input/output ports addressable in 4-bit units. R0
0
, R0
1
, R0
2
, R3
1
, R3
2
, and R3
3
, are
multiplexed with
SCK,
SI, SO, TIMO,
INT
0
, and
INT
1
, respectively.
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