M306V2 Mitsubishi, M306V2 Datasheet - Page 86

• Manufacturer Part Number: M306V2
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

86
Note: This does not apply when the free-run function is selected.
Table 2.10.2 Timer specifications in event counter mode
Count source
Count operation
Divide ratio
Count start condition
Count stop condition
TA2
Read from timer
Write to timer
Select function
Interrupt request generation timing
(2) Event counter mode
OUT
In this mode, the timer counts an internal timer’s overflow.
/TA3
Item
OUT
pin function
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
• TB2 overflow, TAj overflow, TAk overflow
• Up count or down count can be selected by external signal or software
• When the timer overflows or underflows, it reloads the reload register contents
1/ (FFFF
1/ (n + 1) for down count
Count start flag is set (= 1)
Count start flag is reset (= 0)
The timer overflows or underflows
Programmable I/O port, pulse output, or up/down count select input
Count value can be read out by reading timer Ai register
• When counting stopped
• When counting in progress
• Free-run count function
• Pulse output function
before continuing counting (Note)
When a value is written to timer Ai register, it is written to both reload register and counter
When a value is written to timer Ai register, it is written to only reload register
Even when the timer overflows or underflows, the reload register content is not reloaded to it
Each time the timer overflows or underflows, the TAi
(Transferred to counter at next reload time)
16
- n + 1) for up count
Specification
n : Set value
and ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
M306V2ME-XXXFP
OUT
pin’s polarity is reversed
M306V2EEFP
Rev. 1.0