HT82B40A HOLTEK [Holtek Semiconductor Inc], HT82B40A Datasheet - Page 26

• Manufacturer Part Number: HT82B40A
• Description: I/O MCU with USB Interface
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Note:
Oscillator
The clock source for these devices is provided by an in-
tegrated oscillator requiring no external components.
This oscillator has two fixed frequencies of either 6MHz,
or 12MHz, the selection of which is made by the
SYSCLK bit in the SCC register.
Rev. 1.10
PD
PDC
PE
PEC
TBHP
USC
USR
SCC
USB_STAT
PIPE_CTRL
AWR
STALL
PIPE
SIES
MISC
ENDPT_EN
FIFO0
FIFO1
FIFO2
Register
* means warm reset
- not implemented
u means unchanged
x means unknown
(Power-on)
1111 1111
1111 1111
1000 0000
0000 0000
0000 0110
0000 0000
0000 0000
0000 0000
0000 0111
00-0 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
--xx 0000
---- 0000
---- 0000
---- --11
---- --11
Reset
WDT Time-out
Operation)
1111 1111
1111 1111
uuuu uuuu
uuuu xuux
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
xxuu uuuu
uuuu uuuu
uu-x xuuu
xxxx xxxx
xxxx xxxx
xxxx xxxx
--xx 0000
(Normal
---- uuuu
---- uuuu
---- --11
---- --11
RES Reset
Operation)
1111 1111
1111 1111
uuuu uuuu
1000 0000
0000 0000
0000 0110
0000 0000
0000 0000
0000 0000
0000 0111
00-0 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
--xx 0000
---- 0000
---- 0000
(Normal
---- --11
---- --11
26
Watchdog Timer Oscillator
The WDT oscillator is a fully self-contained free running
on-chip RC oscillator with a typical period of 65 s at 5V
requiring no external components. When the device en-
ters the Power Down Mode, the system clock will stop
running but the WDT oscillator continues to free-run and
to keep the watchdog active. However, to preserve
power in certain applications the WDT oscillator can be
disabled via a configuration option.
RES Reset
1111 1111
1111 1111
uuuu uuuu
1000 0000
0000 0000
0000 0110
0000 0000
0000 0000
0000 0000
0000 0111
00-0 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
--xx 0000
---- 0000
---- 0000
---- --11
---- --11
(HALT)
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu xuux
xxuu uuuu
uu-x xuuu
Time-out
xxxx xxxx
xxxx xxxx
xxxx xxxx
--xx 0000
---- uuuu
---- uuuu
(HALT)*
---- --uu
---- --uu
WDT
HT82B40R/HT82B40A
USB Reset
1111 1111
1111 1111
uuuu uuuu
1uuu 0100
0uu0 u000
0000 0110
0000 0000
0000 0000
0000 0000
0000 0111
00-0 0000
--xx 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
(Normal)
---- 0000
---- 0000
---- --11
---- --11
September 4, 2009
USB Reset
1111 1111
1111 1111
uuuu uuuu
1uuu 0100
0uu0 u000
0000 0110
0000 0000
0000 0000
0000 0000
0000 0111
00-0 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
--xx 0000
---- 0000
---- 0000
---- --11
---- --11
(HALT)