M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 111

• 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

Fig. 5.4.1 Structures of timer Ai mode register and timer Ai register in event counter mode
(b15)
b7
b7
b6
b5
0
b4
b3
b2
b1
0 1
(b8)
b0 b7
b0
Timer Ai mode register (i = 0 to 4) (Addresses 56
: It may be either “0” or “1.”
Bit
1
6
0
2
3
4
5
7
Operating mode select bits
Pulse output function select bit
Count polarity select bit
Up-down switching factor select
bit
Fix this bit to “0” in event counter mode.
These bits are ignored in event counter mode.
7702/7703 Group User’s Manual
Bit name
b0
15 to 0
Bit
Timer A0 register (Addresses 47
Timer A1 register (Addresses 49
Timer A2 register (Addresses 4B
Timer A3 register (Addresses 4D
Timer A4 register (Addresses 4F
These bits can be set to “0000
Assuming that the set value = n, the counter
divides the count source frequency by n + 1
when down-counting, or by FFFF
when up-counting.
When reading, the register indicates the
counter value.
b1 b0
0 1 : Event counter mode
0 : No pulse output (TAi
1 : Pulse output (TAi
0 : Counts at falling edge of external signal
1 : Counts at rising edge of external signal
0 : Contents of up-down register
1 : Input signal to TAi
functions as a programmable I/O
port.)
as a pulse output pin.)
Functions
16
Functions
to 5A
5.4 Event counter mode
16
OUT
OUT
)
16
OUT
” to “FFFF
pin functions
pin
16
16
16
16
16
16
– n + 1
pin
, 46
, 48
, 4E
, 4A
, 4C
16
16
16
16
16
TIMER A
)
)
)
)
16
)
.”
Undefined
At reset
At reset
0
0
0
0
0
0
0
0
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
5–21