MC68HC908JL3ECP Freescale Semiconductor, MC68HC908JL3ECP Datasheet - Page 49
MC68HC908JL3ECP
Manufacturer Part Number
MC68HC908JL3ECP
Description
IC MCU 4K FLASH 8MHZ 28-DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908JK1ECDWE.pdf
(180 pages)
Specifications of MC68HC908JL3ECP
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Peripherals
LED, LVD, POR, PWM
Number Of I /o
23
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.3 V
Data Converters
A/D 12x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HC908JL3ECPE
Manufacturer:
FREESCALE
Quantity:
20 000
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Chapter 5
System Integration Module (SIM)
5.1 Introduction
This section describes the system integration module (SIM), which supports up to 24 external and/or
internal interrupts. Together with the CPU, the SIM controls all MCU activities. A block diagram of the SIM
is shown in
controller that coordinates CPU and exception timing. The SIM is responsible for:
Table 5-1
Freescale Semiconductor
•
•
•
•
•
Bus clock generation and control for CPU and peripherals
–
–
Master reset control, including power-on reset (POR) and COP timeout
Interrupt control:
–
–
–
CPU enable/disable timing
Modular architecture expandable to 128 interrupt sources
Signal Name
2OSCOUT
OSCOUT
PORRST
shows the internal signal names used in this section.
IRST
Stop/wait/reset/break entry and recovery
Internal clock control
Acknowledge timing
Arbitration control timing
Vector address generation
R/W
IAB
IDB
Figure
5-1.
Buffered clock from the X-tal oscillator circuit or the RC oscillator circuit.
The 2OSCOUT frequency divided by two. This signal is again divided by two in the SIM to
generate the internal bus clocks. (Bus clock = 2OSCOUT ÷ 4)
Internal address bus
Internal data bus
Signal from the power-on reset module to the SIM
Internal reset signal
Read/write signal
Figure 5-2
Table 5-1. Signal Name Conventions
MC68HC908JL3E Family Data Sheet, Rev. 4
is a summary of the SIM I/O registers. The SIM is a system state
Description
49
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