Hitachi H*/3694F-ZTAT Manual Do Utilizador
Rev. 1.0, 07/01, page 153 of 372
Internal clock:
External clock: FTCI
FTIOA
FTIOB
FTIOC
FTIOD
IRRTW
Control logic
Clock
selector
Comparator
TCNT
Internal
data bus
data bus
Bus interface
Legend:
TMRW: Timer mode register W (8 bits)
TCRW:
TMRW: Timer mode register W (8 bits)
TCRW:
Timer control register W (8 bits)
TIERW: Timer interrupt enable register W (8 bits)
TSRW:
TSRW:
Timer status register W (8 bits)
TIOR:
Timer I/O control register (8 bits)
TCNT:
Timer counter (16 bits)
GRA:
General register A (input capture/output compare register: 16 bits)
GRB:
General register B (input capture/output compare register: 16 bits)
GRC:
General register C (input capture/output compare register: 16 bits)
GRD:
General register D (input capture/output compare register: 16 bits)
GRA
GRB
GRC
GRD
TMRW
TCRW
TIERW
TSRW
TIOR
ø
ø/2
ø/4
ø/8
ø/2
ø/4
ø/8
Figure 12-1 Timer W Block Diagram
12.2
Input/Output Pins
Table 12-2 summarizes the timer W pins.
Table 12-2 Timer W Pins
Name
Abbreviation
Input/Output
Function
External clock input
FTCI
Input
External clock input pin
Input capture/output
compare A
compare A
FTIOA
Input/output
Output pin for GRA output compare or
input pin for GRA input capture
input pin for GRA input capture
Input capture/output
compare B
compare B
FTIOB
Input/output
Output pin for GRB output compare,
input pin for GRB input capture, or
PWM output pin in PWM mode
input pin for GRB input capture, or
PWM output pin in PWM mode
Input capture/output
compare C
compare C
FTIOC
Input/output
Output pin for GRC output compare,
input pin for GRC input capture, or
PWM output pin in PWM mode
input pin for GRC input capture, or
PWM output pin in PWM mode
Input capture/output
compare D
compare D
FTIOD
Input/output
Output pin for GRD output compare,
input pin for GRD input capture, or
PWM output pin in PWM mode
input pin for GRD input capture, or
PWM output pin in PWM mode