upd17072 Renesas Electronics Corporation., upd17072 Datasheet - Page 91
upd17072
Manufacturer Part Number
upd17072
Description
4-bit Single-chip Microcontroller With Hardware For Digital Tuning System
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD17072.pdf
(226 pages)
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12.3 Basic Timer 1
12.3.1 General
8 shows the configuration and function of the interrupt edge select register.
been issued and the IPBTM1 flag has been set (refer to 11. INTERRUPT).
Remark BTM1CK (bit 1 of interrupt edge select register. Refer to Figure 12-8) set the time interval at which the
Figure 12-7 outlines the basic timer 1.
The basic timer 1 issues an interrupt request at fixed time interval and sets the IRQBTM1 flag to 1.
The time interval of the IRQBTM1 flag is set by the BTM1CK flag of the interrupt edge select register. Figure 12-
The interrupt generated by the basic timer 1 is accepted when the IRQBTM1 flag is set, if the EI instruction has
Internal signal
IRQBTM1 flag is set.
75 kHz
(fixed)
Divider
Figure 12-7. Outline of Basic Timer 1
32 ms (31.25 Hz)
8 ms (125 Hz)
BTM1CK flag
Selector
IRQBTM1 set signal
PD17072,17073
91
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