US38024-BAG1 Renesas Electronics America, US38024-BAG1 Datasheet - Page 270

• Manufacturer Part Number: US38024-BAG1
• Description: DEV EVALUATION KIT H8/38024
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of US38024-BAG1

• Contents: 2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
• For Use With/related Products: H8/38024
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Section 9 Timers
Name
Asynchro-
nous event
counter
Note: * The watchdog timer functions differently on the H8/38024, H8/38024S, H8/38024R Group
9.2
9.2.1
Timer A is an 8-bit timer with interval timing and real-time clock time-base functions. The clock
time-base function is available when a 32.768 kHz crystal resonator is connected as the subclock.
Features
Features of timer A are given below.
• Choice of eight internal clock sources (φ/8192, φ/4096, φ/2048, φ/512, φ/256, φ/128, φ/32,
• Choice of four overflow periods (1 s, 0.5 s, 0.25 s, 31.25 ms) when timer A is used as a clock
• An interrupt is requested when the counter overflows.
• Use of module standby mode enables this module to be placed in standby mode independently
Rev. 8.00 Mar. 09, 2010 Page 248 of 658
REJ09B0042-0800
φ/8).
time base (using a 32.768 kHz crystal resonator is connected as the subclock).
when not used.
and H8/38124 Group. See section 9.6, Watchdog Timer, for details.
Timer A
Overview
Functions
•
•
•
•
16-bit counter
Also usable as two
independent 8-bit
counters
Counts events
asynchronous to φ and φw
Can count asynchronous
events (rising/falling/both
edges) independ-ently of
the MCU's internal clock
Internal Clock
φ/2 to φ/8
(3 choices)
Event
Input Pin
AEVL
AEVH
IRQAEC
Waveform
Output Pin
—
Remarks