HD64F36034 datasheet(218/592 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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Section 12 Timer Z

Rev. 4.00 Mar. 15, 2006 Page 186 of 556

REJ09B0026-0400

12.3.14

Interface with CPU

16-Bit Register: TCNT and GR are 16-bit registers. Reading/writing in a 16-bit unit is enabled

but disabled in an 8-bit unit since the data bus with the CPU is 16-bit width. These registers must

always be accessed in a 16-bit unit. Figure 12.5 shows an example of accessing the 16-bit

registers.

Internal data bus

Bus interface

Module data bus

TCNTL

TCNTH

Figure 12.5 Accessing Operation of 16-Bit Register (between CPU and TCNT (16 Bits))

8-Bit Register: Registers other than TCNT and GR are 8-bit registers that are connected internally

with the CPU in an 8-bit width. Figure 12.6 shows an example of accessing the 8-bit registers.

TSTR

Internal data bus

Bus interface

Module data bus

Figure 12.6 Accessing Operation of 8-Bit Register (between CPU and TSTR (8 Bits))

HD64F36034 Datasheet(PDF) 218 Page - Renesas Technology Corp