M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 154

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

TIMER B
6.4 Event counter mode
Fig. 6.4.2 Initial setting example for registers relevant to event counter mode
6–16
6.4.1 Setting for event counter mode
Figure 6.4.2 shows an initial setting example for registers relevant to the event counter mode.
Note that when using interrupts, set up to enable the interrupts. For details, refer to section “Chapter 4.
INTERRUPTS.”
(b15)
Setting divide ratio
b7
b7
Selecting event counter mode and count polarity
Setting interrupt priority level
b7
Setting port P6 direction register
b7
Setting count start bit to “1”
b7
(b8)
b0
0 1
b7
b0
b3 b2
0 0 : Counts at falling of external signal.
0 1 : Counts at rising of external signal.
1 0 : Counts at both of falling and rising of external signal.
1 1 : Not selected.
Selection of event counter mode
Count polarity select bits
Timer Bi mode register (i = 0 to 2) (Addresses 5B
b0
7702/7703 Group User’s Manual
Interrupt priority level select bits
When using interrupts, set these bits to level 1–7.
When disabling interrupts, set these bits to level 0.
b0
Can be set to “0000
Timer Bi interrupt control register (i = 0 to 2)
(Addresses 7A
TB0
TB2
TB1
Port P6 direction register (Address 10
b0
IN
IN
IN
pin
pin
pin
Timer B0 count start bit
Timer B2 count start bit
Timer B1 count start bit
Count start register (Address 40
Note: The counter divides the count source by n + 1.
16
b0
Clear the corresponding bit to “0.”
to 7C
16
” to “FFFF
Timer B0 register (Addresses 51
Timer B1 register (Addresses 53
Timer B2 register (Addresses 55
16
)
: It may be either “0” or “1.”
16
” (n).
16
16
)
)
16
to 5D
16
16
16
16
, 50
, 52
, 54
)
16
16
16
)
)
)
Count starts