Document Outline
- Description
- Features
- Ordering Information
- Pin Arrangement
- Pin Description
- Pin Function
- Block Diagram
- Memory Map
- Functional Description
- Reset
- Operating Modes
- Internal Oscillator Circuit
- Input/Output
- Timers
- Serial Interface
- LCD Controller/Driver
- Pin Description in PROM Mode
- Programmable ROM Operation
- Addressing Modes
- Absolute Maximum Ratings
- Electrical Characteristics for Standard-Voltage
- Serial Interface Timing Characteristics
- Electrical Characteristics for Low-Voltage Versions
- Serial Interface Timing Characteristics
- Notes on ROM Out
- HD404812, HD404814, HD404816, HD404818, HD40L4812, HD40L4814, HD40L4816, HD40L4818 Option List
Regarding the change of names mentioned in the document, such as Hitachi
Electric and Hitachi XX, to Renesas Technology Corp.
The semiconductor operations of Mitsubishi Electric and Hitachi were transferred to Renesas
Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog
and discrete devices, and memory chips other than DRAMs (flash memory, SRAMs etc.)
Accordingly, although Hitachi, Hitachi, Ltd., Hitachi Semiconductors, and other Hitachi brand
names are mentioned in the document, these names have in fact all been changed to Renesas
Technology Corp. Thank you for your understanding. Except for our corporate trademark, logo and
corporate statement, no changes whatsoever have been made to the contents of the document, and
these changes do not constitute any alteration to the contents of the document itself.
Renesas Technology Home Page: http://www.renesas.com
Renesas Technology Corp.
Customer Support Dept.
April 1, 2003
To all our customers
Cautions
Keep safety first in your circuit designs!
1. Renesas Technology Corporation puts the maximum effort into making semiconductor products better
and more reliable, but there is always the possibility that trouble may occur with them. Trouble with
semiconductors may lead to personal injury, fire or property damage.
Remember to give due consideration to safety when making your circuit designs, with appropriate
measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or
(iii) prevention against any malfunction or mishap.
Notes regarding these materials
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Technology Corporation product best suited to the customer's application; they do not convey any
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circuit application examples contained in these materials.
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contained therein.
HD404818 Series
4-Bit Single-Chip Microcomputer
Preliminary
Rev. 2.0
Sept. 1998
Description
T he H D4 04 81 8 Se ri es of 4-bit single-chip HMCS400 series microcomputers provide high program
productivity. It incorporates a large size memory, LCD controller/driver, voltage comparator, and 32-kHz
watch oscillator circuit.
The HD404818 Series has both standard voltage versions and low voltage versions available. The standard
voltage versions operate at 4.0 V to 6.0 V (mask ROM version) and 4.0 V to 5.5 V (PROM version), while
the low voltage versions operate at 2.7 V to 6.0 V (mask ROM) and 3.0 V to 5.5 V (PROM). Low voltage
versions include an L in their product name.
Standard voltage versions: HD404812, HD404814, HD404816, HD404818, HD4074818
Low voltage versions: HD40L4812, HD40L4814, HD40L4816, HD40L4818, HD407L4818
The HD4074818 and HD407L4818, containing PROMs, are ZTAT
TM
microcomputers which can
dramatically shorten system development time and smoothly proceed from debugging to mass production.
ZTAT
TM
: Zero Turn Around Time ZTAT is a trademark of Hitachi Ltd.
Features
2048-word
10-bit ROM (HD404812, HD40L4812)
4096-word
10-bit ROM (HD404814, HD40L4814)
6144-word
10-bit ROM (HD404816, HD40L4816)
8192-word
10-bit ROM (HD404818, HD40L4818, HD4074818, HD407L4818)
1184-digit
4-bit RAM
30 I/O pins, including 10 high-current output pins, all CMOS and programmable as I/O pull-up MOS
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
HD404818 Series
2
Subroutine stack up to 16 levels, including interrupts
Instruction cycle time:
1
s (f
OSC
= 4 MHz for HD404812/HD404814/HD404816/HD404818/HD4074818)
5
s (f
OSC
= 800 kHz for HD40L4812/HD40L4814/HD40L4816/HD40L4818/HD407L4818)
Four low-power dissipation modes
Standby mode
Stop mode
Watch mode
Subactive mode
Internal oscillator:
Main clock: Can be driven by ceramic oscillator, crystal oscillator, or external clock
Subclock: 32.768-kHz crystal
Voltage comparator (2 channels)
Package
80-pin plastic flat package
(FP-80B, FP-80A)
80-pin plastic thin flat package
(TFP-80)
HD404818 Series
3
Ordering Information
Type
Supply
Voltage
Product
Name
Model Name
ROM (Word)
Clock
Frequency
Package
Mask ROM
Standard
(4.0 to 6.0 V)
HD404812
HD404812FS
2,048
4
FP-80B
HD404812H
FP-80A
HD404812TF
TFP-80
HD404814
HD404814FS
4,096
FP-80B
HD404814H
FP-80A
HD404814TF
TFP-80
HD404816
HD404816FS
6,144
FP-80B
HD404816H
FP-80A
HD404816TF
TFP-80
HD404818
HD404818FS
8,192
FP-80B
HD404818H
FP-80A
HD404818TF
TFP-80
Low-voltage
operation
HD40L4812
HD40L4812FS
2,048
0.8
FP-80B
(2.7 to 6.0 V)
HD40L4812H
FP-80A
HD40L4812TF
TFP-80
HD40L4814
HD40L4814FS
4,096
FP-80B
HD40L4814H
FP-80A
HD40L4814TF
TFP-80
HD40L4816
HD40L4816FS
6,144
FP-80B
HD40L4816H
FP-80A
HD40L4816TF
TFP-80
HD40L4818
HD40L4818FS
8,192
FP-80B
HD40L4818H
FP-80A
HD40L4818TF
TFP-80
ZTAT
TM
Standard
(4.0 to 5.5 V)
HD4074818
HD4074818FS
8,192
4
FP-80B
HD4074818H
FP-80A
HD4074818TF
TFP-80
Low-voltage
operation
HD407L4818
HD407L4818FS
0.8
FP-80B
(3.0 to 5.5 V)
HD407L4818H
FP-80A
HD407L4818TF
TFP-80
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