MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 637

• Manufacturer Part Number: MC68EC000EI20
• Description: IC MPU 32BIT 20MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC000EI20

• Processor Type: M680x0 32-Bit
• Speed: 20MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

Exception Processing Reference
B.3 FLOATING-POINT STACK FRAMES
Figures B-16 through B-23 illustrate floating-point stack frames for the MC68881/MC68882
and the MC68040.
B-10
Figure B-16. MC68881/MC68882 and MC68040 Null Stack Frame
+$00
+$00
+$04
+$08
+$0C
+$10
+$14
+$18
MC68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
31
31
VERSION NUMBER
COMMAND/CONDITION REGISTER
Figure B-17. MC68881 Idle Stack Frame
$00
23
23
(UNDEFINED)
+$18
EXCEPTIONAL OPERAND
OPERAND REGISTER
(12 BYTES)
BIU FLAGS
15
15
(RESERVED)
(RESERVED)
(RESERVED)
7
7
0
0
MOTOROLA