MC68EC000EI12 Freescale Semiconductor, MC68EC000EI12 Datasheet - Page 470

• Manufacturer Part Number: MC68EC000EI12
• Description: IC MPU 32BIT 12MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor
• Series: 68K - M680X0r

Specifications of MC68EC000EI12

• Processor Type: M680x0 32-Bit
• Speed: 12MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Core Size: 32 Bit
• Cpu Speed: 12MHz
• Digital Ic Case Style: PLCC
• No. Of Pins: 68
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: 0°C To +70°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Clock Frequency: 12MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

Supervisor (Privileged) Instructions
FSAVE
Floating-Point Status Register: Not affected.
Instruction Format:
Instruction Field:
6-16
15
1
Effective Address field—Determines the addressing mode for the state frame. Only
The FSAVE does not save the programmer’s model registers of the floating-point unit;
it saves only the user invisible portion of the machine. The FSAVE instruction may be
used with the FMOVEM instruction to perform a full context save of the floating-point
unit that includes the floating-point data registers and system control registers. To
accomplish a complete context save, first execute an FSAVE instruction to suspend
the current operation and save the internal state, then execute the appropriate
FMOVEM instructions to store the programmer’s model.
14
predecrement or control alterable addressing modes can be used as listed in the
following table:
1
13
1
Addressing Mode
([bd,An,Xn] ,od)
([bd,An],Xn ,od)
12
1
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
(bd,An,Xn)
(d
(d
—(An)
8
(An) +
,An,Xn)
(An)
16
Save Internal Floating-Point State
Dn
An
,An)
11
COPROCESSOR
(MC68881, MC68882, MC68040 only)
10
ID
Mode
010
100
101
110
110
110
110
—
—
—
9
reg. number:An
reg. number:An
reg. number:An
reg. number:An
reg. number:An
reg. number:An
reg. number:An
8
1
Register
—
—
—
7
0
6
0
Addressing Mode
5
([bd,PC,Xn] ,od)
([bd,PC],Xn ,od)
(bd,PC,Xn)
(d
# < data >
(d
(xxx).W
MODE
(xxx).L
8
,PC,Xn)
16
4
,PC)
EFFECTIVE ADDRESS
3
FSAVE
Mode
2
111
111
—
—
—
—
—
—
REGISTER
MOTOROLA
1
Register
000
001
—
—
—
—
—
—
0