mc68hc908bd48 Freescale Semiconductor, Inc, mc68hc908bd48 Datasheet - Page 90

• Manufacturer Part Number: mc68hc908bd48
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

System Integration Module (SIM)
Data Sheet
90
Note: Writing a logic 0 clears SBSW.
Addr.
$FE00
$FE01
$FE03
$FE04
$FE05
SIM Break Status Register
Interrupt Status Register 1
Interrupt Status Register 2
SIM Break Flag Control
Register Name
Register (SBFCR)
SIM Reset Status
Register (SRSR)
(SBSR)
(INT1)
(INT2)
Table 7-2
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Signal Name
POR:
OSCXCLK
OSCOUT
PORRST
Table 7-1. SIM I/O Register Summary
IRST
R/W
IAB
IDB
BCFE
Bit 7
POR
IF6
R
R
R
0
1
0
0
0
0
System Integration Module (SIM)
shows the internal signal names used in this section.
= Unimplemented
Buffered version of OSC1 from the oscillator
The OSCXCLK frequency divided by two. This signal is again
divided by two in the SIM to generate the internal bus clocks.
(Bus clock = OSCXCLK divided by four)
Internal address bus
Internal data bus
Signal from the power-on reset module to the SIM
Internal reset signal
Read/write signal
Table 7-2. Signal Name Conventions
PIN
IF5
R
R
R
R
6
0
0
0
0
0
COP
IF4
R
R
R
R
5
0
0
0
0
0
ILOP
IF3
R
R
R
R
4
0
0
0
0
0
Description
ILAD
IF10
IF2
R
R
R
R
R
3
0
0
0
0
MC68HC908BD48
= Reserved
IF1
IF9
Freescale Semiconductor
R
R
R
R
0
0
0
0
0
2
SBSW
Note
IF8
R
R
R
1
0
0
0
0
0
0
—
Rev. 2.1
Bit 0
IF7
R
R
R
R
0
0
0
0
0
0