参数资料
型号: 73S1209F-68IM/F/P
厂商: Maxim Integrated Products
文件页数: 39/123页
文件大小: 0K
描述: IC SMART CARD READER PROG 68-QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 260
系列: 73S12xx
核心处理器: 80515
芯体尺寸: 8-位
速度: 24MHz
连通性: I²C,智能卡,UART/USART
外围设备: LED,POR,WDT
输入/输出数: 9
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 68-VFQFN 裸露焊盘
包装: 管件
73S1209F Data Sheet
DS_1209F_004
Program Status Word (PSW):
Table 9: PSW Register Flags
MSB
LSB
CV
AC
F0
RS1
RS
OV
P
Bit
Symbol
Function
PSW.7
CV
Carry flag.
PSW.6
AC
Auxiliary Carry flag for BCD operations.
PSW.5
F0
General purpose Flag 0 available for user.
PSW.4
RS1
Register bank select control bits. The contents of RS1 and RS0 select
the working register bank:
RS1/RS0
Bank Selected
Location
00
Bank 0
(0x00 – 0x07)
01
Bank 1
(0x08 – 0x0F)
10
Bank 2
(0x10 – 0x17)
11
Bank 3
(0x18 – 0x1F)
PSW.3
RS0
PSW.2
OV
Overflow flag.
PSW.1
F1
General purpose Flag 1 available for user.
PSW.0
P
Parity flag, affected by hardware to indicate odd / even number of “one”
bits in the Accumulator, i.e. even parity.
Stack Pointer (SP): The stack pointer is a 1-byte register initialized to 0x07 after reset. This register is
incremented before PUSH and CALL instructions, causing the stack to begin at location 0x08.
Data Pointer: The data pointer (DPTR) is 2 bytes wide. The lower part is DPL, and the highest is DPH.
It can be loaded as a 2-byte register (MOV DPTR,#data16) or as two registers (e.g. MOV DPL,#data8). It
is generally used to access external code or data space (e.g. MOVC A,@A+DPTR or MOVX A,@DPTR
respectively).
Program Counter: The program counter (PC) is 2 bytes wide initialized to 0x0000 after reset. This
register is incremented during the fetching operation code or when operating on data from program
memory. Note: The program counter is not mapped to the SFR area.
Port Registers: The I/O ports are controlled by Special Function Registers USR70 and USR8. The
contents of the SFR can be observed on corresponding pins on the chip. Writing a 1 to any of the ports
(see Table 10) causes the corresponding pin to be at high level (3.3V), and writing a 0 causes the
corresponding pin to be held at low level (GND). The data direction registers UDIR70 and UDIR8 define
individual pins as input or output pins (see the User (USR) Ports section for details).
22
Rev. 1.2
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73S1209F-44IMR/F/P IC SMART CARD READER PROG 44-QFN
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