M37544 Datasheet, PDF (34/68 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

7544 Group
(1) Port P0 direction register
(2) Port P1 direction register
(3) Port P2 direction register
(4) Port P3 direction register
(5) Pull-up control register
(6) Port P1P3 control register
(7) Serial I/O status register
(8) Serial I/O control register
(9) UART control registe
(10) Timer A mode register
(11) Timer A (low-order)
(12) Timer A (high-order)
(13) Prescaler 1
(14) Timer 1
(15) Timer X mode register
(16) Prescaler X
(17) Timer X
(18) Timer count source set register 1
(19) Timer count source set register 2
(20) A/D control register
(21) MISRG
(22) Watchdog timer control register
(23) Interrupt edge selection register
(24) CPU mode register
(25) Interrupt request register 1
(26) Interrupt request register 2
(27) Interrupt control register 1
(28) Interrupt control register 2
(29) Processor status register
(30) Program counter
Address
000116
Register contents
0016
000316 X X X 0 0 0 0 0
000516 X X 0 0 0 0 0 0
000716 0 X X 0 0 0 0 0
001616
0016
001716
0016
001916 1 0 0 0 0 0 0 0
001A16
0016
001B16 1 1 1 0 0 0 0 0
001D16
0016
001E16
FF16
001F16
FF16
002816
FF16
002916 0 0 0 0 0 0 0 1
002B16
0016
002C16
FF16
002D16
FF16
002E16
0016
002F16
0016
003416 0 0 0 1 0 0 0 0
003816
0016
003916 0 0 1 1 1 1 1 1
003A16
0016
003B16 1 0 0 0 0 0 0 0
003C16
0016
003D16
0016
003E16
0016
003F16
0016
(PS) X X X X X 1 X X
(PCH) Contents of address FFFD16
(PCL) Contents of address FFFC16
X : Undefined
The content of other registers is undefined when the microcomputer is reset.
The initial values must be surely set bifore you use it.
Fig. 39 Internal status of microcomputer at reset
Rev.1.04 2004.06.08 page 34 of 66
REJ03B0012-0104Z