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PDF HT82A525R Data sheet ( Hoja de datos )
| Número de pieza | HT82A525R | |
| Descripción | I/O Type USB 8-Bit OTP MCU | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
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HT82A525R
I/O Type USB 8-Bit OTP MCU with SPI
www.DataSheet4U.com
Features
· Operating voltage:
fSYS=6MHz: 3.3V~5.5V
fSYS=12MHz: 4.5V~5.5V
· Two oscillators:
External crystal -- HXT (6MHz or 12 MHz)
Internal RC -- HIRC (12MHz)
· Fully integrated internal 12MHz oscillator requires no external components
· 4K´15 Program Memory
· 192´8 Data Memory RAM
· USB 2.0 Full Speed Compatible
· Single 16-bit programmable Timer/Event Counters with overflow interrupt
· Single 8-bit programmable Timer/Event Counters with overflow interrupt
· Two SPI interfaces shared with I/O lines
· Support SPI serial DMA or 8-bit parallel DMA
· Software controlled 4-COM lines LCD driver with 1/2 bias
· Watchdog Timer function
· Power down and wake-up functions to reduce power consumption
· 3-channel 12-bit PWM output shared with three I/O lines
· Up to 42 bidirectional I/O lines
· Up to 0.33ms instruction cycle with 12MHz system clock at VDD=5V
· 4 endpoints supported (endpoint 0 included)
· Support interrupt, control & bulk transfer
· Total FIFO size is 208 bytes (8,8,64,64´2 for EP0~EP3)
· 6-level subroutine nesting
· Bit manipulation instruction
· Table read instructions
· 63 powerful instructions
· All instructions executed in one or two instruction cycles
· Low voltage reset function (2.2V±0.2V)
· 28-pin SSOP, 32-pin QFN, 48/64-pin LQFP packages
General Description
This HT82A525R is an 8-bit high performance RISC microcontroller designed for USB keyboard
mouse and fingerprint product applications.
The advantages of low power consumption, I/O flexibility, timer functions, oscillator options,
multi-channel Pulse Width Modulation function, Watchdog timer, dual SPI interfaces, SPI serial
DMA or 8-bit parallel DMA , Power Down and wake-up functions, combine to provide the device
with a huge range of functional options while still maintaining a high level of cost effectiveness. The
device includes a fully integrated system oscillator HIRC, which requires no external components.
While the DMA function opens up application possibilities such as fingerprint data processing, the
device is also suited for a range of other applications such as motor driving, industrial control,
consumer products, subsystem controllers, etc.
Rev. 1.00
1 June 30, 2010
1 page  
HT82A525R
I/O Type USB 8-Bit OTP MCU with SPI
www.DataSheet4U.com
Pin Name
PF1/OSCO
RES
VSS
AVSS
VDDIO
HVDD
VDD
V33O
USBDP
USBDM
I/O
I/O (PF1)
O(OSCO)
I
¾
¾
¾
¾
¾
O
I/O
I/O
Options
Pull-high
wake-up
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
Description
Bidirectional I/O line. The pin can be configured as a wake-up
input by a configuration option. Software instructions determine
if the pin is a CMOS output or Schmitt trigger input. A
configuration option determines if the pin has a pull-high resistor.
The power supply for the I/O pins is sourced from the VDD pin.
External crystal connection
Schmitt trigger reset input, active low
HIRC and digital negative power supply, ground
Analog negative power supply, ground
Positive power supply, VDDIO is used for PA, PB, PC, PD, PE,
except PF.
HIRC Positive power supply
Analog and digital positive power supply
3.3V regulator output, can be disabled by firmware
USB D+ or 3D PS2 data line.
USB function is controlled using software control registers.
PS2 function is controlled by the SELPS2 bit in USC register.
USB D- or 3D PS2 CLK line.
USB function is controlled using software control registers.
PS2 function is controlled by the SELPS2 bit in USC register.
Absolute Maximum Ratings
Supply Voltage ...............................................................................................VSS-0.3V to VSS+6.0V
Storage Temperature .................................................................................................-50°C to 125°C
Input Voltage .................................................................................................VSS-0.3V to VDD+0.3V
Operating Temperature................................................................................................-40°C to 85°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Rat-
ings² may cause substantial damage to the device. Functional operation of this device at other condi-
tions beyond those listed in the specification is not implied and prolonged exposure to extreme
conditions may affect device reliability.
Rev. 1.00
5 June 30, 2010
5 Page 
HT82A525R
I/O Type USB 8-Bit OTP MCU with SPI
www.DataSheet4U.com
Special Vectors
Within the Program Memory, certain locations are reserved for special usage such as reset and
interrupts.
· Location 000H
Location 000H is reserved for program initialization.
After a chip reset, the program always begins execution at this location.
· Location 004H
Location 004H is reserved for the external interrupt service program. If the INT input pin is
activated, and the interrupt is enabled, and the stack is not full, the program begins execution at
location 004H.
· Location 008H
Location 008H is reserved for the Timer/Event Counter 0 interrupt service program. If a timer
interrupt results from a Timer/Event Counter 0 overflow, and if the interrupt is enabled and the stack
is not full, the program begins execution at location 008H.
· Location 00CH
Location 00CH is reserved for the Timer/Event Counter 1 interrupt service program. If a timer
interrupt results from a Timer/Event Counter 1 overflow, and if the interrupt is enabled and the stack
is not full, the program begins execution at location 00CH.
· Location 010H
Location 010H is reserved for the USB interrupt service program. If the USB interrupt is activated,
the interrupt is enabled and the stack is not full, the program begins execution at location 010H.
· Location 014H
Location 014H is reserved for the Serial Interface 1. When 8 bits data have been received or
transmitted successfully from this Serial Interface 1, the related interrupts are enabled, and the stack
is not full, the program begins execution at location 014H.
0 0 0 H D e v ic e In itia liz a tio n P r o g r a m
0 0 4 H E x te r n a l In te r r u p t S u b r o u tin e
008H
T im e r /E v e n t C o u n te r 0
In te r r u p t S u b r o u tin e
00C H
T im e r /E v e n t C o u n te r 1
In te r r u p t S u b r o u tin e
0 1 0 H U S B In te r r u p t S u b r o u tin e
0 1 4 H S e r ia l In te r fa c e 1 In te r r u p t S u b r o u tin e
0 1 8 H S e r ia l In te r fa c e 2 In te r r u p t S u b r o u tin e
P ro g ra m
M e m o ry
n00H
L o o k - u p T a b le ( 2 5 6 w o r d s )
nFFH
F00H
L o o k - u p T a b le ( 2 5 6 w o r d s )
FFFH
1 5 b its
N o te : n ra n g e s fro m 0 to F
Program Memory
Rev. 1.00
11 June 30, 2010
11 Page | ||
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| PDF Descargar | [ Datasheet HT82A525R.PDF ] | |
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