MC68HC908RK2 Datasheet, PDF (82/232 Pages) Motorola, Inc – Microcontroller Unit

System Integration Module (SIM)
Addr. Register Name
Bit 7
Read:
SIM Break Status Register
R
$FE00
(SBSR) Write:
See page 97.
Reset:
Note: Writing a logic 0 clears SBSW
Read: POR
SIM Reset Status Register
$FE01
(SRSR) Write:
See page 98.
POR: 1
$FE02
Read:
SIM Break Flag Control
Register (SBFCR) Write:
See page 99.
Reset:
BCFE
0
6
5
R
R
PIN
COP
X
X
R
R
0
0
= Unimplemented
4
3
2
R
R
R
ILOP ILAD
0
X
X
X
R
R
R
0
0
0
R = Reserved
Figure 6-2. SIM I/O Register Summary
1
SBSW
See Note
0
Bit 0
R
LVI
0
X
X
R
R
0
0
X = Indeterminate
Table 6-1 shows the internal signal names used in this section.
Table 6-1. Signal Name Conventions
Signal Name
Description
CGMXCLK Selected clock source from internal clock generator module (ICG)
CGMOUT
Clock output from ICG module
Bus clock = CGMOUT divided by two
ICLK
Output from internal clock generator
ECLK
External clock source
IAB
Internal address bus
IDB
internal data bus
PORRST Signal from the power-on reset module to the SIM
IRST
Internal reset signal
R/W
Read/write signal
Advance Information
82
System Integration Module (SIM)
MC68HC908RK2 — Rev. 4.0
MOTOROLA