参数资料
型号: ST62P20CN1/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
封装: PLASTIC, SSOP-20
文件页数: 9/104页
文件大小: 1487K
代理商: ST62P20CN1/XXX
ST6208C/ST6209C/ST6210C/ST6220C
12/104
MEMORY MAP (Cont’d)
Table 2. Hardware Register Map
Legend:
x = undefined, R/W = Read/Write, Ro = Read-only Bit(s) in the register, Wo = Write-only Bit(s)
in the register.
Notes:
1. The contents of the I/O port DR registers are readable only in output configuration. In input configura-
tion, the values of the I/O pins are returned instead of the DR register contents.
2. The bits associated with unavailable pins must always be kept at their reset value.
3. Do not use single-bit instructions (SET, RES...) on Port Data Registers if any pin of the port is configured
in input mode (refer to Section 7 "I/O PORTS" on page 37 for more details)
4. Depending on device. See device summary on page 1.
Address
Block
Register
Label
Register Name
Reset
Status
Remarks
080h
to 083h
CPU
X,Y,V,W
X,Y index registers
V,W short direct registers
xxh
R/W
0C0h
0C1h
I/O Ports
DRA 1) 2) 3)
DRB 1) 2) 3)
Port A Data Register
Port B Data Register
00h
R/W
0C2h
0C3h
Reserved (2 Bytes)
0C4h
0C5h
I/O Ports
DDRA 2)
DDRB 2)
Port A Direction Register
Port B Direction Register
00h
R/W
0C6h
0C7h
Reserved (2 Bytes)
0C8h
CPU
IOR
Interrupt Option Register
xxh
Write-only
0C9h
ROM
DRWR
Data ROM Window register
xxh
Write-only
0CAh
0CBh
Reserved (2 Bytes)
0CCh
0CDh
I/O Ports
ORA 2)
ORB 2)
Port A Option Register
Port B Option Register
00h
R/W
0CEh
0CFh
Reserved (2 bytes)
0D0h
0D1h
ADC 4)
ADR
ADCR
A/D Converter Data Register
A/D Converter Control Register
xxh
40h
Read-only
Ro/Wo
0D2h
0D3h
0D4h
Timer1
PSCR
TCR
TSCR
Timer 1 Prescaler Register
Timer 1 Downcounter Register
Timer 1 Status Control Register
7Fh
0FFh
00h
R/W
0D5h
to 0D7h
Reserved (3 Bytes)
0D8h
Watchdog
Timer
WDGR
Watchdog Register
0FEh
R/W
0D9h
to 0FEh
Reserved (38 Bytes)
0FFh
CPU
A
Accumulator
xxh
R/W
1
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