MC68EC000EI12 Freescale Semiconductor, MC68EC000EI12 Datasheet - Page 484

• 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
PDBcc
Operation:
Assembler
Syntax:
Attributes:
Description: This instruction is a looping primitive of three parameters: an MC68851
6-30
The condition specifier cc indicates the following conditions:
condition, a counter (an MC68020 data register), and a 16-bit displacement. The
instruction first tests the condition to determine if the termination condition for the loop
has been met. If so, the main processor executes the next instruction in the instruction
stream. If the termination condition is not true, the low-order 16 bits of the counter
register are decremented by one. If the result is not D1, execution continues at the
location specified by the current value of the program counter plus the sign-extended
16-bit displacement. The value of the program counter used in the branch address
calculation is the address of the PDBcc instruction plus two.
Specifier
WS
GS
BS
SS
AS
CS
LS
IS
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
Description Condition Field
If Supervisor State
PDBcc Dn, < label >
Size = (Word)
W set
G set
B set
S set
A set
C set
L set
I set
Then If cc False
Else TRAP
Test, Decrement, and Branch
Then (DnD1
Else No Operation
000000
000010
000100
000110
001000
001010
001100
001110
(MC68851)
Dn; If Dn < > D1 then (PC) + d 3 PC)
Specifier
WC
GC
BC
SC
AC
CC
LC
IC
Description Condition Field
W clear
G clear
B clear
S clear
A clear
C clear
L clear
I clear
000001
000011
000101
000111
001001
001011
001101
001111
PDBcc
MOTOROLA