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H8/3002 Datasheet(PDF) 329 Page - Renesas Technology Corp

Part # H8/3002
Description  Microcomputer
PDF  700 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3002 Datasheet(HTML) 329 Page - Renesas Technology Corp

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Figure 10-11 Access to Timer Counter (CPU Reads TCNT, Lower Byte)
10.3.2 8-Bit Accessible Registers
The registers other than the timer counters, general registers, and buffer registers are 8-bit
registers. These registers are linked to the CPU by an internal 8-bit data bus.
Figures 10-12 and 10-13 show examples of byte read and write access to a TCR.
If a word-size data transfer instruction is executed, two byte transfers are performed.
Figure 10-12 TCR Access (CPU Writes to TCR)
On-chip data bus
CPU
H
L
Bus interface
H
L
Module
data bus
TCNTH
TCNTL
On-chip data bus
CPU
H
L
Bus interface
H
L
Module
data bus
TCR
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