55
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
Abbreviation
Address
Timer counter YH / timer load register YH
TCYH/TLYH
H'FFCE
Timer counter YL / timer load register YL
TCYL/TLYL
H'FFCF
Port data register 1
*
PDR1
H'FFD4
Port data register 2
*
PDR2
H'FFD5
Port data register 5
*
PDR5
H'FFD8
Port data register 6
*
PDR6
H'FFD9
Port data register 7
*
PDR7
H'FFDA
Port data register 8
*
PDR8
H'FFDB
Port data register 9
*
PDR9
H'FFDC
Port data register A
*
PDRA
H'FFDD
Port data register E
*
PDRE
H'FFD3
Note:
*
The port data register addresses are also assigned directly to input pins.
Table 2.13
Registers with Write-Only Bits
Register Name
Abbreviation
Address
Port control register 1
PCR1
H'FFE4
Port control register 2
PCR2
H'FFE5
Port control register 5
PCR5
H'FFE8
Port control register 6
PCR6
H'FFE9
Port control register 7
PCR7
H'FFEA
Port control register 8
PCR8
H'FFEB
Port control register 9
PCR9
H'FFEC
Port control register A
PCRA
H'FFED
Port control register E
PCRE
H'FFE3
Timer control register F
TCRF
H'FFB6
PWM control register
PWCR
H'FFA4
PWM data register U
PWDRU
H'FFA5
PWM data register L
PWDRL
H'FFA6