MC68HC908GZ8 FREESCALE [Freescale Semiconductor, Inc], MC68HC908GZ8 Datasheet - Page 214
MC68HC908GZ8
Manufacturer Part Number
MC68HC908GZ8
Description
M68HC08 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC68HC908GZ8.pdf
(314 pages)
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System Integration Module (SIM)
The SIM is responsible for:
Table 16-1
214
Addr.
$FE00
$FE01
$FE03
$FE04
$FE05
$FE06
Signal Name
•
•
•
•
•
CGMXCLK
CGMVCLK
CGMOUT
PORRST
IRST
R/W
IAB
IDB
Bus clock generation and control for CPU and peripherals:
–
–
Master reset control, including power-on reset (POR) and computer operating properly (COP)
timeout
Interrupt control:
–
–
–
CPU enable/disable timing
Modular architecture expandable to 128 interrupt sources
Stop/wait/reset/break entry and recovery
Internal clock control
Acknowledge timing
Arbitration control timing
Vector address generation
SIM Break Flag Control
Register Name
shows the internal signal names used in this section.
Register (SBFCR)
SIM Break Status
SIM Reset Status
Register 1 (INT1)
Register 2 (INT2)
Register 3 (INT3)
Register (SBSR)
Register (SRSR)
Interrupt Status
Interrupt Status
Interrupt Status
See page 228.
See page 228.
See page 229.
See page 224.
See page 224.
See page 224.
Buffered version of OSC1 from clock generator module (CGM)
PLL output
PLL-based or OSC1-based clock output from CGM module (Bus clock = CGMOUT divided by two)
Internal address bus
Internal data bus
Internal reset signal
Read/write signal
Signal from the power-on reset module to the SIM
Reset:
Reset:
Reset:
Reset:
Reset:
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
POR:
Figure 16-2. SIM I/O Register Summary
Table 16-1. Signal Name Conventions
1. Writing a logic 0 clears SBSW.
BCFE
Bit 7
POR
IF14
IF6
R
R
R
R
0
1
0
0
0
0
0
= Unimplemented
IF13
PIN
IF5
R
R
R
R
R
6
0
0
0
0
0
0
COP
IF12
IF20
IF4
R
R
R
R
R
5
0
0
0
0
0
Description
ILOP
IF11
IF19
IF3
R
R
R
R
R
R
4
0
0
0
0
0
= Reserved
ILAD
IF10
IF18
IF2
R
R
R
R
R
3
0
0
0
0
0
MODRST
IF17
IF1
IF9
R
R
R
R
R
2
0
0
0
0
0
Freescale Semiconductor
Note
SBSW
IF16
LVI
IF8
R
R
R
R
1
0
0
0
0
0
0
(1)
Bit 0
IF15
IF7
R
R
R
R
R
0
0
0
0
0
0
0
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