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PDF HT82K74EE Data sheet ( Hoja de datos )

Número de pieza HT82K74EE
Descripción 27MHz Keyboard/ Mouse TX 8-Bit MCU
Fabricantes Holtek 
Logotipo Holtek Logotipo



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No Preview Available ! HT82K74EE Hoja de datos, Descripción, Manual

HT82K74E/HT82K74EE
27MHz Keyboard/ Mouse TX 8-Bit MCU
Technical Document
· Application Note
- HA0075E MCU Reset and Oscillator Circuits Application Note
Features
· Operating voltage:
fSYS= 27MHz: 3.0V~3.3V for crystal mode
· Program Memory: 2K´15 bits
· Data Memory: 96´8 bits
· 36 bidirectional I/O lines, with pull-high options
· Watchdog Timer function
· Single 16-bit internal timer with overflow interrupt
and timer input
· Power down and wake-up functions to reduce
power consumption
· 4-level subroutine nesting
· Bit manipulation instruction
· Table read instructions
· Built-in DC/DC to provide stable (2.8V, 3.0V, 3.3V
use configuration option) DC_DC 3.0V with error
±0.1V
· 2.2V/2.0V with ± 0.1V tolerance or 1.8V Low battery
detector with internal bit set, it detects the BAT-in
input voltage
· 128´8 bits data EEPROM for HT82K74EE
· One external crystal (27MHz) to supply
microcontroller system clock
· 63 powerful instructions
· All instructions executed in one or two machine
cycles
· Low voltage reset function
· Crystal oscillator which built-in capacitor value can
configure by firmwave OSCC register
· Two bit to define microcontroller system clock
(fSYS/1, fSYS/4, fSYS/8, fSYS/16)
· HT82K74E:
28-pin SSOP, 32-pin QFN and
48-pin SSOP/LQFP packages
· HT82K74EE:
28-pin SSOP and 48-pin SSOP/LQFP packages
General Description
The device is an 8-bit high performance, RISC architec-
ture microcontroller devices specifically designed for
multiple I/O control product applications.
www.DataSheet4UT.hceomadvantages of low power consumption, I/O flexibil-
ity, timer functions, Power Down and wake-up functions,
Watchdog timer, motor driving, industrial control, con-
sumer products, subsystem controllers, etc.
Block Diagram
There are two dice in the HT82K74EE package: one is
the HT82K74E MCU, the other is a 128´8 bits EEPROM
used for data memory purpose. The two dice are
wire-bonded to form HT82K74EE
S ta c k
EEPRO M
D a ta M e m o ry
O TP
P ro g ra m
M e m o ry
RAM
D a ta M e m o ry
R eset
C ir c u it
8 - b it
R IS C C o re
W a tc h d o g T im e r
O s c illa to r
W a tc h d o g
T im e r
V o lta g e
D e te c to r
I/O
1 6 - b it
P ow er
C ry s ta l
In te rru p t
P o rts
T im e r
A m p lifie r
O s c illa to r
C o n tr o lle r
D C /D C
Rev. 1.00
1 December 15, 2009

1 page




HT82K74EE pdf
HT82K74E/HT82K74EE
RF Characteristics
Ta=25°C
Symbol
Parameter
Test Conditions
VDD Conditions
Min.
PRF
Maximum Output Power
(Load impedance is 50W)
PWRAMP option selected Half
¾
PWRAMP option selected Full
¾
¾
PBW
20dB Bandwidth for Modulated
Carrier (3Kbps)
¾
¾
¾
PRF1
1st Adjacent Channel Transmit
Power 50kHz
¾
¾
¾
PRF2
2nd Adjacent Channel Transmit
Power 100kHz
¾
¾
¾
Typ.
-3
0
6
¾
¾
Max.
¾
¾
¾
-30
-40
Unit
dBm
dBm
kHz
dBm
dBm
DC_AC Power-on Reset AC/DC Characteristics
Symbol
Parameter
IPOR
Operating Current
Test Conditions
VDD Conditions
2.0V~
3.3V
¾
Min.
¾
RSR_POR
VDD Rise Rate to Ensure Power-on
Reset
¾
Without 0.1mF between
VDD and VSS
0.05
VPOR_MAX
Maximum VDD Start Voltage to
Ensure Power-on Reset
¾
Without 0.1mF between
VDD and VSS
0.9
tPOR
Power-on Reset Low Pulse Width
Without 0.1mF between
VDD and VSS
¾
With 0.1mF between
VDD and VSS
2
10
Typ.
¾
¾
¾
¾
¾
Ta=25°C
Max. Unit
0.7 mA
¾ V/ms
1.5 V
¾ ms
¾ ms
www.DataSheet4U.com
Rev. 1.00
5 December 15, 2009

5 Page





HT82K74EE arduino
HT82K74E/HT82K74EE
tempreg1
tempreg2
mov
mov
tabrdl
dec
tabrdl
org
dc
db ?
db ?
:
:
a,06h
tblp,a
:
:
tempreg1
tblp
; temporary register #1
; temporary register #2
; initialise table pointer - note that this address
; is referenced
; to the last page or present page
; transfers value in table referenced by table pointer
; to tempregl
; data at prog. memory address ²706H² transferred to
; tempreg1 and TBLH
; reduce value of table pointer by one
tempreg2
:
:
700h
; transfers value in table referenced by table pointer
; to tempreg2
; data at prog.memory address ²705H² transferred to
; tempreg2 and TBLH
; in this example the data ²1AH² is transferred to
; tempreg1 and data ²0FH² to register tempreg2
; the value ²00H² will be transferred to the high byte
; register TBLH
; sets initial address of last page
00Ah, 00Bh, 00Ch, 00Dh, 00Eh, 00Fh, 01Ah, 01Bh
:
:
Because the TBLH register is a read-only register and cannot be restored, care should be taken to ensure its protection
if both the main routine and Interrupt Service Routine use the table read instructions. If using the table read instructions,
the Interrupt Service Routines may change the value of TBLH and subsequently cause errors if used again by the main
routine. As a rule it is recommended that simultaneous use of the table read instructions should be avoided. However,
in situations where simultaneous use cannot be avoided, the interrupts should be disabled prior to the execution of any
main routine table-read instructions. Note that all table related instructions require two instruction cycles to complete
their operation.
www.DataSheet4U.com
Rev. 1.00
11 December 15, 2009

11 Page







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