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HT82M9BEE Datenblatt(PDF) 26 Page - Holtek Semiconductor Inc

Teilenummer HT82M9BEE
Bauteilbeschribung  USB Mouse Encoder 8-Bit MCU with EEPROM
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Hersteller  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT82M9BEE Datenblatt(HTML) 26 Page - Holtek Semiconductor Inc

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HT82M9BEE/HT82M9BAE
Rev. 1.50
26
December 22, 2008
Clock Control Register
- SCC
There is a system clock control register implemented to select the clock used in the MCU. This register consists of USB
clock control bit (USBCKEN), second suspend mode control bit (SUSPEND2) and system clock selection (SCLKSEL).
Bit No.
Label
Read/Write
Option
Functions
0~2
PF0~PF2
R/W
¾
Reserved, must set to
²0².
3
PF3
R/W
USBCKEN
USB clock control bit. When set to
²1², indicates a USBCK ON,
else USBCK OFF. The default value is
²0².
4
PF4
R/W
SUSPEND2
This bit is used to reduce power consumption in the suspend
mode. In the normal mode this bit must be cleared to zero(De-
fault=
²0²). In the HALT mode this bit should be set high to re-
duce power consumption and LVR with no function. In the USB
mode this bit cannot be set high.
5
PF5
R/W
¾
Reserved, must set to
²0².
6
PF6
R/W
SCLKSEL
System clock 6MHz or 12MHz option, when working on exter-
nal oscillator mode. The default value is
²0².
0: Operating at external 12MHz mode
1: Operating at external 6MHz mode
The default value is
²0².
7
PF7
R/W
PS2_flag
This flag is used to show that the MCU is in PS2 mode (Bit=1).
This bit is R/W by FW and will be cleared to zero after power-on
reset. The default value is
²0².
SCC (0X1C) Register
Table High Byte Pointer for Current Table Read
- TBHP
Bit No.
Label
Read/Write
Option
Functions
4~0
PGC4~PGC0
R/W
¾
Store current table read bit12~bit8 data
TBHP (0X1F) Register
Options
No.
Option
1
WDT clock source: RC (system/4) (default: T1)
2
WDT clock source: enable/disable for normal mode (default: disable)
3
PA0~PA7 ,PB4/SDA, PB7/SCL wake-up by bit (PA2, PA3 both wake-up by falling or rising edge)
(default: non wake-up)
4
PA0~PA7 pull-high by bit (default: pull-high)
5
PB pull-high by bit (default: pull-high)
6
PC pull-high by nibble (default: pull-high)
7
LVR enable/disable (default: enable)
8
PA0~PA3, PB2, PB3 pull-low by bit (default: non pull-low 30k
W)
9
²CLR WDT², 1 or 2 instructions
10
TBHP enable/disable (default: disable)
11
PA output mode (CMOS/NMOS/PMOS) by bit (default: CMOS)


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