HT46R14A Ver la hoja de datos (PDF) - Holtek Semiconductor
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HT46R14A Datasheet PDF : 49 Pages
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HT46R14A
fS Y S
8 - s ta g e P r e s c a le r
8 -1 M U X
fIN T
T0P S C 2~T0P S C 0
(1 /1 ~ 1 /1 2 8 )
TM R 0
T0M 1
T0M 0
T0E
D a ta b u s
8 - b it T im e r /E v e n t C o u n te r
P r e lo a d R e g is te r
R e lo a d
T0M 1
T0M 0
T0O N
P u ls e W id th
M e a s u re m e n t
M o d e C o n tro l
8 - b it T im e r /E v e n t
C o u n te r (T M R 0 )
Timer/Event Counter 0
O v e r flo w
T o In te rru p t
PFD 0
TM R 1
fS Y S /4
T1M 1
T1M 0
T1E
D a ta b u s
8 - b it T im e r /E v e n t C o u n te r
P r e lo a d R e g is te r
R e lo a d
T1M 1
T1M 0
T1O N
P u ls e W id th
M e a s u re m e n t
M o d e C o n tro l
8 - b it T im e r /E v e n t
C o u n te r (T M R 1 )
Timer/Event Counter 1
O v e r flo w
T o In te rru p t
PFD 1
PFD 0
PFD 1
M
U
TQ
PFD
X
P A 3 D a ta C T R L
P F D S o u r c e O p tio n
PFD Source Option
Bit No.
0
1
2
3
4
5
6
7
Rev. 1.00
Label
T0PSC0
T0PSC1
T0PSC2
T0E
T0ON
¾
T0M0
T0M1
Function
Define the prescaler stages, T0PSC2, T0PSC1, T0PSC0=
000: fINT=fSYS
001: fINT=fSYS/2
010: fINT=fSYS/4
011: fINT=fSYS/8
100: fINT=fSYS/16
101: fINT=fSYS/32
110: fINT=fSYS/64
111: fINT=fSYS/128
Defines the TMR0 active edge of the timer/event counter:
In Event Counter Mode (T0M1,T0M0)=(0,1):
1:count on falling edge;
0:count on rising edge
In Pulse Width measurement mode (T0M1,T0M0)=(1,1):
1: start counting on the rising edge, stop on the falling edge;
0: start counting on the falling edge, stop on the rising edge
Enable/disable the timer counting
(0=disable; 1=enable)
Unused bit, read as ²0²
Define the operating mode (T0M1, T0M0)
01 = Event count mode (External clock)
10 = Timer mode (Internal clock)
11 = Pulse Width measurement mode (External clock)
00 = Unused
TMR0C (0EH) Register
16
August 3, 2007
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