73s1209f68im Maxim Integrated Products, Inc., 73s1209f68im Datasheet - Page 21

• Manufacturer Part Number: 73s1209f68im
• Description: Self-contained Pinpad, Smart Card Reader Ic Uart To Iso7816 / Emv Bridge Ic
• Manufacturer: Maxim Integrated Products, Inc.

DS_1209F_004
1.5.3
A map of the XRAM Special Function Registers is shown in Table 6. . The smart card registers are listed
separately in Table 108.
Accumulator (ACC, A): ACC is the accumulator register. Most instructions use the accumulator to hold
the operand. The mnemonics for accumulator-specific instructions refer to accumulator as “A”, not ACC.
B Register: The B register is used during multiply and divide instructions. It can also be used as a
scratch-pad register to hold temporary data.
Rev. 1.2
Name
DAR
WDR
SWDR
RDR
SRDR
CSR
USRIntCtl1
USRIntCtl2
USRIntCtl3
USRIntCtl4
INT5Ctl
INT6Ctl
MPUCKCtl
ACOMP
TRIMPCtl
FUSECtl
VDDFCtl
SECReg
MISCtl0
MISCtl1
LEDCtl
External Data Special Function Registers (SFRs)
Location Reset Value
0x FF80
0x FF81
0x FF82
0x FF83
0x FF84
0x FF85
0x FF90
0x FF91
0x FF92
0x FF93
0x FF94
0x FF95
0x FFA1
0x FFD0
0x FFD1
0x FFD2
0x FFD4
0x FFD7
0x FFF1
0x FFF2
0x FFF3
Table 8: XRAM Special Function Registers Reset Values
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x0C
0x00
0x00
0x00
0x00
0x00
0x00
0x10
0xFF
Description
Device Address Register (I
Write Data Register (I
Secondary Write Data Register (I
Read Data Register (I
Secondary Read Data Register (I
Control and Status Register (I
External Interrupt Control 1
External Interrupt Control 2
External Interrupt Control 3
External Interrupt Control 4
External Interrupt Control 5
External Interrupt Control 6
MPU Clock Control
Analog Compare Register
TRIM Pulse Control
FUSE Control
VDDFault Control
Security Register
Miscellaneous Control Register 0
Miscellaneous Control Register 1
LED Control Register
2
2
C)
C)
2
C)
2
C)
2
2
C)
C)
73S1209F Data Sheet
21