參數(shù)資料
型號: MB89498PF
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 8-bit Proprietary Microcontroller
中文描述: 8-BIT, MROM, 12.5 MHz, MICROCONTROLLER, PQFP100
封裝: 20 X 14 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁數(shù): 19/45頁
文件大?。?/td> 577K
代理商: MB89498PF
19
MB89490 Series
The RP indicates the address of the register bank currently in use. The relationship between the pointer contents
and the actual address is based on the conversion rule illustrated below.
The CCR consists of bits indicating the results of arithmetic operations and the contents of transfer data and
bits for control of CPU operations at the time of an interrupt.
H-flag:
Set to "1" when a carry or a borrow from bit 3 to bit 4 occurs as a result of an arithmetic operation. Clear
to "0" otherwise. This flag is for decimal adjustment instructions.
I-flag:
Interrupt is allowed when this flag is set to "1". Interrupt is prohibited when the flag is set to "0". Clear to "0"
when reset.
IL1, 0:
Indicates the level of the interrupt currently allowed. Processes an interrupt only if its request level is
higher than the value indicated by this bit.
N-flag:
Set to "1" if the MSB is set to "1" as the result of an arithmetic operation. Clear to "0" otherwise.
Z-flag:
Set to "1" when an arithmetic operation results in "0". Clear to "0" otherwise.
V-flag:
Set to "1" if a signed numeric value overflows because of an arithmetic calculation. Clear to "0" if the
overflow does not occur.
C-flag:
Set to "1" when a carry or a borrow from bit 7 occurs as a result of an arithmetic operation. Clear to
"0" otherwise. Set to the shift-out value in the case of a shift instruction.
IL1
IL0
Interrupt level
Priority
0
0
1
High
Low = no interrupt
0
1
1
0
2
1
1
3
Rule for Conversion of Actual Addresses of the General-purpose Register Area
“0”
A15
“0”
A14
“0”
A13
“0”
A12
“0”
A11
“0”
A10
“0”
A9
“1”
A8
R4
A7
R3
A6
R2
A5
R1
A4
R0
A3
b2
A2
b1
A1
b0
A0
Lower OP codes
RP
Generated addresses
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