Hitachi H8/3637 Hardware Manual page 65

Table 2.12 lists the registers with shared addresses. Table 2.13 lists the registers that contain write-
only bits.
Table 2.12 Registers with Shared Addresses
Register Name
Timer counter YH / timer load register YH
Timer counter YL / timer load register YL
Port data register 1*
Port data register 2*
Port data register 5*
Port data register 6*
Port data register 7*
Port data register 8*
Port data register 9*
Port data register A*
Port data register E*
Note: * The port data register addresses are also assigned directly to input pins.
Table 2.13 Registers with Write-Only Bits
Register Name
Port control register 1
Port control register 2
Port control register 5
Port control register 6
Port control register 7
Port control register 8
Port control register 9
Port control register A
Port control register E
Timer control register F
PWM control register
PWM data register U
PWM data register L
Abbreviation
TCYH/TLYH
TCYL/TLYL
PDR1
PDR2
PDR5
PDR6
PDR7
PDR8
PDR9
PDRA
PDRE
Abbreviation
PCR1
PCR2
PCR5
PCR6
PCR7
PCR8
PCR9
PCRA
PCRE
TCRF
PWCR
PWDRU
PWDRL
Address
H'FFCE
H'FFCF
H'FFD4
H'FFD5
H'FFD8
H'FFD9
H'FFDA
H'FFDB
H'FFDC
H'FFDD
H'FFD3
Address
H'FFE4
H'FFE5
H'FFE8
H'FFE9
H'FFEA
H'FFEB
H'FFEC
H'FFED
H'FFE3
H'FFB6
H'FFA4
H'FFA5
H'FFA6
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