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SH7616 Datasheet(PDF) 244 Page - Renesas Technology Corp |
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SH7616 Datasheet(HTML) 244 Page - Renesas Technology Corp |
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244 / 935 page ![]() Section 6 User Break Controller (UBC) Rev. 2.00 Mar 09, 2006 page 218 of 906 REJ09B0292-0200 6.2.12 Break Execution Times Register C (BETRC) Bit: 15 14 13 12 11 10 9 8 — — — — ETRC11 ETRC10 ETRC9 ETRC8 Initial value: 00 000 000 R/W: R R R R R/W R/W R/W R/W Bit: 76 543 210 ETRC7 ETRC6 ETRC5 ETRC4 ETRC3 ETRC2 ETRC1 ETRC0 Initial value: 00 000 000 R/W: R/W R/W R/W R/W R/W R/W R/W R/W When a channel C execution-times break condition is enabled (by setting the ETBEC bit in BRCR), this 16-bit register specifies the number of times a channel C break condition occurs before a user break interrupt is requested. The maximum value is 212 – 1 times. Each time a channel C break condition occurs, the value in BETRC is decremented by 1. After the BETRC value reaches H'0001, an interrupt is requested when a break condition next occurs. As exceptions and interrupts cannot be accepted for instructions in a repeat loop comprising no more than three instructions, BETRC is not decremented by the occurrence of a break condition for an instruction in such a repeat loop (see 4.6, When Exception Sources Are Not Accepted). Bits 15 to 12 are always read as 0, and should only be written with 0. BETRC is initialized to H'0000 by a power-on reset. |
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