參數資料
型號: PIC12CE673-10/P
廠商: Microchip Technology
文件頁數: 98/129頁
文件大?。?/td> 0K
描述: IC MCU OTP 1KX14 A/D&EE 8DIP
產品培訓模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標準包裝: 60
系列: PIC® 12C
核心處理器: PIC
芯體尺寸: 8-位
速度: 10MHz
外圍設備: POR,WDT
輸入/輸出數: 5
程序存儲器容量: 1.75KB(1K x 14)
程序存儲器類型: OTP
EEPROM 大?。?/td> 16 x 8
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
數據轉換器: A/D 4x8b
振蕩器型: 內部
工作溫度: 0°C ~ 70°C
封裝/外殼: 8-DIP(0.300",7.62mm)
包裝: 管件
PIC12C67X
DS30561B-page 70
1999 Microchip Technology Inc.
10.1
Special Function Registers as
Source/Destination
The PIC12C67X’s orthogonal instruction set allows
read and write of all file registers, including special
function registers. There are some special situations
the user should be aware of:
10.1.1
STATUS AS DESTINATION
If an instruction writes to STATUS, the Z, C and DC bits
may be set or cleared as a result of the instruction and
overwrite the original data bits written. For example,
executing CLRF STATUS will clear register STATUS,
and then set the Z bit leaving 0000 0100b in the reg-
ister.
10.1.2
TRIS AS DESTINATION
Bit 3 of the TRIS register always reads as a '1' since
GP3 is an input only pin. This fact can affect some read-
modify-write operations on the TRIS register.
10.1.3
PCL AS SOURCE OR DESTINATION
Read, write or read-modify-write on PCL may have the
following results:
Read PC:
PCL
→ dest
Write PCL:
PCLATH
→ PCH;
8-bit destination value
→ PCL
Read-Modify-Write:
PCL
→ ALU operand
PCLATH
→ PCH;
8-bit result
→ PCL
Where PCH = program counter high byte (not an
addressable register), PCLATH = Program counter
high holding latch, dest = destination, WREG or f.
10.1.4
BIT MANIPULATION
All bit manipulation instructions are done by first read-
ing the entire register, operating on the selected bit and
writing the result back (read-modify-write). The user
should keep this in mind when operating on special
function registers, such as ports.
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