t81l0010b TM Technology Inc., t81l0010b Datasheet - Page 6

• Manufacturer Part Number: t81l0010b
• Description: T81l0010b 8-bit Mcu With Embedded Eeprom
• Manufacturer: TM Technology Inc.

9. Function Description
9.1. 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
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to change products or specifications without notice.
BIT SYMBOL FUNCTION
tm
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:
(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
D8H
D0H
C8H
C0H
B8H
B0H
A8H
A0H
F8H
F0H
E8H
E0H
98H
90H
88H
80H
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.
CH
TE
T2CON T2MOD
SCON
TCON
ACC
PSW
Carry flag.
Auxiliary Carry flag. (For BCD operations.)
Overflow flag.
P0*
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.
P3
P2
P1
IP
IE
B
AC
TMOD
SBUF
SP
DPL
TL0
F0
DPH
TL1
RS1
TH0
TL2
P. 6
RS0
TH2
TH1
Preliminary T81L0010B
OV
PCON
Publication Date: JAN. 2006
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Revision:A
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