M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 99

• 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

5.3 Timer mode
In this mode, the timer counts an internally generated count source. (Refer to Table 5.3.1.) Figure 5.3.1
shows the structures of the timer Ai mode register and timer Ai register in the timer mode.
Table 5.3.1 Specifications of timer mode
Count source
Count operation
Divide ratio
Count start condition
Count stop condition
Interrupt request occurrence timing
TAi
TAi
Read from timer Ai register
Write to timer Ai register
IN
OUT
pin function
pin function
Item
f
• Down-count
• When the counter underflows, reload register’s contents are reloaded
When count start bit is set to “1.”
When count start bit is cleared to “0.”
When the counter underflows.
Programmable I/O port or gate input
Programmable I/O port or pulse output
Counter value can be read out.
2
, f
and counting continues.
While counting is stopped
When a value is written to timer Ai register, it is written to both
reload register and counter.
While counting is in progress
When a value is written to timer Ai register, it is written to only
reload register. (Transferred to counter at next reload timing.)
7702/7703 Group User’s Manual
16
(n + 1)
, f
64
1
, or f
512
n : Timer Ai register setting value
Specifications
5.3 Timer mode
TIMER A
5–9