W921E400A Datasheet, PDF (11/53 Pages) Winbond – 4-BIT MICROCONTROLLER

W921E400A/W921C400
Special Control Register Map, continued
ADDR.
DESCRIPTION
029H Reserved
02AH TM2 Control Register
02BH TM2 MSB Data Register
02CH TM2 LSB Data Register
02DH TM2 Status Register
02EH TM2 Trigger Condition Register
02FH TM3 Control Register
030H TM3 MSB Data Register
031H TM3 LSB Data Register
032H TM3 Status Register
033H Reserved
034H Interrupt Enable Flag
035H Stop Mode Released Flag
036H Hold Mode Released Flag 1
037H Hold Mode Released Flag 2
038H Hold Mode Released Flag 3
039H Interrupt Control Register 1
03AH Interrupt Control Register 2
03BH Interrupt Control Register 3
03CH Hold Released Status Flag 1
03DH Hold Released Status Flag 2
03EH Hold Released Status Flag 3
03FH Beep Tone Generator Register
ABBREVIATION
(TM2CR)
(TM2MSB)
(TM2LSB)
(STTM2)
(TGTM2)
(TM3CR)
(TM3MSB)
(TM3LSB)
(STTM3)
(ENINT)
(STPRF)
(HMRF1)
(HMRF2)
(HMRF3)
(INTCT1)
(INTCT2)
(INTCT3)
(HRSTS1)
(HRSTS2)
(HRSTS3)
(BTGR)
INITIAL VALUE
-
00H
0FH
0FH
00H
00H
00H
0FH
0FH
00H
-
00H
08H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
6.2.2 Stack Register Area
There is one 8-bit stack pointer in this chip, and the stacks located address are 040H to 0FFH. After
power on reset the stack pointer will be set to 0FFH. The stack pointer will be decreased by 4 when
the CALL/CALLP or interrupt is accepted, and will be increased by 4 when the RTN or RTNI
instruction is executed. The format of the stack content is shown in the following table.
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Publication Release Date: July 1999
Revision A3