HD64F36034 datasheet(178/592 Pages) RENESAS

Part #	HD64F36034

Description	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

PDF	592 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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178 / 592 page

Section 10 Timer B1

Rev. 4.00 Mar. 15, 2006 Page 146 of 556

REJ09B0026-0400

10.3.2

Timer Counter B1 (TCB1)

TCB1 is an 8-bit read-only up-counter, which is incremented by internal clock input. The clock

source for input to this counter is selected by bits TMB12 to TMB10 in TMB1. TCB1 values can

be read by the CPU at any time. When TCB1 overflows from H'FF to H'00 or to the value set in

TLB1, the IRRTB1 flag in IRR2 is set to 1. TCB1 is allocated to the same address as TLB1. TCB1

is initialized to H'00.

10.3.3

Timer Load Register B1 (TLB1)

TLB1 is an 8-bit write-only register for setting the reload value of TCB1. When a reload value is

set in TLB1, the same value is loaded into TCB1 as well, and TCB1 starts counting up from that

value. When TCB1 overflows during operation in auto-reload mode, the TLB1 value is loaded

into TCB1. Accordingly, overflow periods can be set within the range of 1 to 256 input clocks.

TLB1 is allocated to the same address as TCB1. TLB1 is initialized to H'00.

HD64F36034 Datasheet(PDF) 178 Page - Renesas Technology Corp