upd17240 Renesas Electronics Corporation., upd17240 Datasheet - Page 57

• Manufacturer Part Number: upd17240
• Description: 4-bit Single-chip Microcontrollers For Small General-purpose Infrared Remote Control Transmitters
• Manufacturer: Renesas Electronics Corporation.

6.
6.1
for the basic interval timer is f
6.2
BTMRES. The frequency for the interrupt signal, output by the basic interval timer, is selected by BTMMD, and the
watchdog timer is reset by WDTRES.
System
clock f
The basic interval timer has a function to generate the interval timer interrupt signal and watchdog timer reset signal.
The system clock (f
The basic interval timer is controlled by the bits in the register file. That is, the basic interval timer is reset by
BASIC INTERVAL TIMER/WATCHDOG TIMER
X
Source Clock for Basic Interval Timer
Controlling Basic Interval Timer
divider
1/2
7
X
) is divided to generate the source clock for the basic interval timer. The input clock frequency
µ PD17240, 17241, 17242, 17243, 17244, 17245, 17246
X
/2
Figure 6-1. Basic Interval Timer Configuration
7
. When the CPU is set in the STOP mode, the basic interval timer also stops.
BTMRES
divider
1/2
11
Data Sheet U15002EJ1V1DS
divider
1/2
divider
1/2
WDTRES
f
f
X
X
divider
/2
/2
1/2
18
20
BTMCK
IRQBTM
Reset signal output
57