T81L0006B TM Technology Inc., T81L0006B Datasheet - Page 7

• Manufacturer Part Number: T81L0006B
• Description: 8-bit A/d Type Mcu
• Manufacturer: TM Technology Inc.

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10.3 Special Function Register
*Note: P0:Internal still keeping, but for pad dominate, no external pin assignment
Accumulator : ACC
Accumulator simply as A.
B Register : B
pad register.
Program Status Word : PSW
TM Technology Inc. reserves the right
to change products or specifications without notice.
BIT SYMBOL FUNCTION
ACC is the Accumulator register. The mnemonics for Accumulator-Specific instructions, however, refer to the
The B register is used during multiply and divide operations. For other instructions it can be treated as another scratch
The PSW register contains program status information as detailed in
PSW.7
PSW.6
PSW.5
PSW.4
PSW.3
PSW.2
PSW.1
PSW.0
NOTE: The contents of (RS1, RS0) enable the working register banks as follows:
D8H
D0H
C8H
C0H
B8H
B0H
A8H
A0H
F8H
F0H
E8H
E0H
98H
90H
88H
80H
(0,0)— Bank 0 (00H–07H)
(0,1)— Bank 1 (08H–0fH)
(1,0)— Bank 2 (10H–17H)
(1,1)— Bank 3 (18H–17H)
CY
CH
TE
CY
AC
F0
RS1
RS0
OV
—
P
Set/cleared by software to determine working register bank. (See Note.)
Set/cleared by software to determine working register bank. (See Note.)
Set/cleared by hardware each instruction cycle to indicate an odd/even number of “one” bits in the
Accumulator, i.e., even parity.
T2CON
TCON
SCON
ACC
PSW
P0*
P3
P2
P1
IP
IE
B
Carry flag.
Auxiliary Carry flag. (For BCD operations.)
Overflow flag.
User-definable flag.
Flag 0. (Available to the user for general purposes.)
Register bank select control bit 1.
Register bank select control bit 0.
Parity flag.
AC
T2MOD RCAP2L RCAP2H
TMOD
SBUF
SP
DPL
TL0
F0
DPH
TL1
RS1
P. 7
TH0
TL2
RS0
TH2
TH1
WDREL
OV
Publication Date: JAN. 2006
PCON
T81L0006A/B
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Revsion : C
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