參數(shù)資料
型號: MC68EC030FE40C
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 40 MHz, MICROPROCESSOR, CQFP132
封裝: LEAD FREE, CERAMIC, QFP-132
文件頁數(shù): 41/44頁
文件大?。?/td> 499K
代理商: MC68EC030FE40C
6
MC68EC030 TECHNICAL DATA
MOTOROLA
31
15
16
0
31
0
31
15
16
0
7
8
15
0
31
0
31
0
31
0
2
(CCR)
A7'
(ISP)
SR
VBR
SFC
DFC
A7"
(MSP)
CACR
CAAR
INTERRUPT
STACK POINTER
MASTER
STACK POINTER
STATUS
REGISTER
VECTOR
BASE REGISTER
ALTERNATE FUNCTION
CACHE CONTROL
REGISTER
CACHE ADDRESS
REGISTER
31
0
31
0
AC0
AC1
ACCESS CONTROL
REGISTER 0
ACCESS CONTROL
REGISTER 1
CODE REGISTERS
15
0
ACUSR
ACU STATUS
REGISTER
Figure 4. Supervisor Programming Model Supplement
The status register (see Figure 5) contains the interrupt priority mask (three bits) as well as the following
condition codes: extend (X), negate (N), zero (Z), overflow (V), and carry (C). Additional control bits
indicate that the controller is in the trace mode (T1 or T0), supervisor/user state (S), and master/interrupt
state (M).
T
S
III
X
N
Z
V
C
2
1
0
15
13
10
8
4
0
INTERRUPT
PRIORITY MASK
SYSTEM BYTE
USER BYTE
CONDITION
CODES
1
14
000
0
T0
M
1
12
11
9
765
32
EXTEND
NEGATIVE
ZERO
OVERFLOW
CARRY
TRACE ENABLE
SUPERVISOR/USER STATE
MASTER/INTERRUPT STATE
Figure 5. Status Register
F
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sc
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S
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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