st2024c Sitronix Technology Corporation, st2024c Datasheet - Page 9

• Manufacturer Part Number: st2024c
• Description: 24k 8-bit Single Chip Microcontroller
• Manufacturer: Sitronix Technology Corporation

8.2
The RAM mapping includes Control Registers, Data RAM, Stack RAM and LCD RAM.
Note: 1. Some addresses of I/O area, $2~$7, $A~$E, $15, $18~$1F, $22, $24~$25, $28~$2F, $31~$37, $39,
8.2.2
DATA RAM are organized in 256 bytes.
8.2.3
STACK RAM are organized in 256 bytes. It provides for a
maximum of 128-level subroutine stacks And can be used
as data memory.
Ver 2.2
Address Name
$03A
$03B
$03C
$03E
$000
$001
$008
$009
$00F
$010
$011
$012
$013
$014
$016
$017
$020
$021
$023
$026
$027
$030
$038
2. User should never use undefined addresses and bits.
3. Do not use Bit instructions for write-only registers, such as RMBx, SMBx….
4. E.V.B ‘s RAM Power On Initial Value are Same as Real Chip.
$3D,$3F, are no used.
RAM
DATA RAM ($0080~$00FF)
STACK RAM ($0100~$01FF)
PA
PB
PCA
PCB
PMCR
PSG0L
PSG0H
PSG1L
PSG1H
DAC
PSGC
VOL
LCK
BTM
PRS
T1M
T1C
SYS
XLCD
LCTL
SCAN
IREQ
IENA
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
W
R
SCAN[7] SCAN[6] SCAN[5] SCAN[4]
PSG0[7] PSG0[6] PSG0[5] PSG0[4] PSG0[3] PSG0[2] PSG0[1] PSG0[0]
PSG1[7] PSG1[6] PSG1[5] PSG1[4] PSG1[3] PSG1[2] PSG1[1] PSG1[0]
VOL1[3] VOL1[2] VOL1[1] VOL1[0] VOL0[3] VOL0[2] VOL0[1] VOL0[0]
PCA[7]
DAC[7]
PRS[7]
TABLE 8-2: CONTROL REGISTERS ($0000~$003E)
T1C[7]
LPWR
SRES
PULL
XSEL
Bit 7
PA[7]
-
-
-
-
-
-
-
-
-
-
-
-
DAC[6]
BLANK
PCA[6]
PCK[2]
PCK[2]
PRS[6]
T1C[6]
PDBN
SENA
OSTP
PA[6]
Bit 6
-
-
-
-
-
-
-
-
-
-
DAC[5]
DRV[2]
PCA[5]
PCK[1]
PCK[1]
PRS[5]
COMO
INTEG
T1C[5]
SENT
XSTP
PA[5]
Bit 5
IRBT
IEBT
-
-
-
-
-
-
-
9/54
PCA[4]
DAC[4]
PCK[0]
PCK[0]
DRV[1]
PRS[4]
T1M[4]
T1C[4]
LENH
PA[4]
TEST
Bit 4
IRPT
IEPT
8.2.4
Resident LCD-RAM, accessible through write and read
instructions, are organized in 40 bytes for 40x8 LCD display.
Note that this area can also be used as data memory.
-
-
-
-
-
-
-
-
PSG0[11] PSG0[10]
PSG1[11] PSG1[10]
DMD[1]
DAC[3]
DRV[0]
BTM[3]
PCA[3]
PRS[3]
T1M[3]
T1C[3]
WSKP
SEGO
PRBS
Bit 3
PA[3]
PB[3]
IRT1
IET1
LCD RAM ($0200~$0227)
-
-
-
-
-
DMD[0]
DAC[2]
PCA[2]
BTM[2]
PRS[2]
T1M[2]
CTR[1]
LCK[2]
T1C[2]
C1EN
WAIT
Bit 2
PA[2]
PB[2]
-
-
-
-
-
-
-
PSG0[9] PSG0[8]
PSG1[9] PSG1[8]
DAC[1]
PCA[1]
PCB[1]
BTM[1]
PRS[1]
T1M[1]
CTR[0]
IRDAC
LCK[1]
T1C[1]
IEDAC
PSGO
HEAV
C0EN
PA[1]
PB[1]
Bit 1
INH
-
-
-
DACE=0
DACE=1
PSGOB
DAC[0]
PCA[0]
PCB[0]
BTM[0]
PRS[0]
T1M[0]
LCK[0]
T1C[0]
DUTY
PA[0]
PB[0]
Bit 0
IRX
IEX
-
-
-
-
100 - - -00
1111 1111
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
000 - - - - -
0000 - - - -
- - 11 1-11
- - 00 0-00
- - - - - -11
- - - - - -00
0000 00- -
- - - - - -0-
- - - - 0000
0000 0000
- - - - 0000
- - -0 0000
-000 0000
-000 0000
- - - - 0000
- -00 0100
ST2024C
Default
1/31/08