H8-3644 Datasheet, PDF (26/549 Pages) Renesas Technology Corp – 8-Bit Single-Chip Microcomputer

Section 1 Overview
1.2 Internal Block Diagram
Figure 1.1 shows a block diagram of the H8/3644 Group.
P1₀/TMOW
P1₄/PWM
P1₅/IRQ₁
P1₆/IRQ₂
P1₇/IRQ₃/TRGV
P2₀/SCK₃
P2₁/RXD
P2₂/TXD
P3₀/SCK₁
P3₁/SI₁
P3₂/SO₁
P9₀/FV_PP*
P9₁
P9₂
P9₃
P9₄
CPU
H8/300L
Data bus (lower)
ROM
RAM
Timer A
SCI1
Timer B1
SCI3
Timer X
Timer V
Watchdog
timer
14-bit PWM
A/D converter
Port B
Note: * There is no P9₀ function in the flash memory version.
Figure 1.1 Block Diagram
Rev. 6.00 Sep 12, 2006 page 6 of 526
REJ09B0326-0600
P8₇
P8₆/FTID
P8₅/FTIC
P8₄/FTIB
P8₃/FTIA
P8₂/FTOB
P8₁/FTOA
P8₀/FTCI
P7₇
P7₆/TMOV
P7₅/TMCIV
P7₄/TMRIV
P7₃
P6₇
P6₆
P6₅ CMOS large-
P6₄ current port
P6₃ IOL= 10 mA
P6₂ @VOL= 1V
P6₁
P6₀
P5₇/INT₇
P5₆/INT₆/TMIB
P5₅/INT₅/ADTRG
P5₄/INT₄
P5₃/INT₃
P5₂/INT₂
P5₁/INT₁
P5₀/INT₀