HT82K94E/HT82K94A

Rev. 1.50

23

October 11, 2007

Bit No.

Label

R/W

Function

0, 2

¾¾

Undefined, should be cleared to

²0²

1

OSC_ctrl

R/W

1: High driver of oscillator circuit for low voltage

0: normal driver of oscillator circuit

3

USBCKEN

R/W

USB clock control bit. When this bit is set to

²1², it indicates that the USB clock is en-

abled. Otherwise, the USB clock is turned-off. (Default=

²0²)

4

SUSPEND2

R/W

This bit is used to reduce power consumption in the suspend mode. In the normal

mode this bit must be cleared to zero(Default=

²0²). In the HALT mode this bit should

be set high to reduce power consumption and LVR with no function. In the USB

mode this bit cannot be set high.

5

PS2_flag

R/W

This flag is used to show the MCU is under PS2 mode. (Bit=1)

This bit is R/W by FW and will be cleared to

²0² after power-on reset. (Default=²0²)

6

SYSCLK

R/W

This bit is used to specify the system oscillator frequency used by the MCU. If a

6MHz crystal oscillator or resonator is used, this bit should be set to

²1². If a 12MHz

crystal oscillator or resonator is used, this bit should be cleared to

²0² (default).

7

LVD

R/W

1: battery voltage low

0: battery voltage high

SCC (1EH) Register

Table High Byte Pointer for Current Table Read TBHP (Address 0X1F)

Register

Bits

Labels

Read/Write

Option

Functions

(0X1F)

4~0

PGC4~PGC0

R/W

¾

Store current table read bit12~bit8 data

Options

The following table shows all kinds of option in the microcontroller. All of the options must be defined to ensure proper

system functioning.

No.

Option

1

Chip lock bit (by bit)

2

PA0~PA7 pull-high resistor enabled or disabled (by bit)

3

PB0~PB7 pull-high resistor enabled or disabled (by nibble)

4

PC0~PC7 pull-high resistor enabled or disabled (by nibble)

5

PD0~PD7 pull-high resistor enabled or disabled (by nibble)

6

PE0~PE7 pull-high resistor enabled or disabled (by nibble)

7

LVR enable or disable

8

WDT enable or disable

9

10

²CLRWDT² instruction(s): 1 or 2

11

PA0~PA7 output structures: CMOS/NMOS open-drain/PMOS open-drain (by bit)

12

PA0~PA7 wake-up enabled or disabled (by bit)

13

PB0~PB7 wake-up enabled or disabled (by nibble)

14

PC0~PC7 wake-up enabled or disabled (by nibble)

15

PD0~PD7 wake-up enabled or disabled (by nibble)

16

TBHP enable or disable (default disable)

17

LVR/LVD kind: 2-battery or 3-battery