MC68HC05SU3A Datasheet, PDF (16/80 Pages) Freescale Semiconductor, Inc – Fully static chip design featuring the industry standard 8-bit M68HC05 core

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1.2
Freescale Semiconductor, Inc.
Mask Options
The following mask options are available:
• RC or Crystal Oscillator (see Section 2.2). The default is crystal option.
• IRQ pull-up resistor — enabled or disabled.
• Power-On Reset delay — Table 1-1 shows available options. The default value is 4096
cycles.
Table 1-1 Power-On Reset Delay Mask Option
Power-On Reset Delay
(cycles)
256
512
1024
2048
4096
8192
16384
32768
• Power-On Reset Slow mode. If enabled, the device goes into Slow mode directly upon
power-on reset. The bus frequency is 16 times slower than the normal mode. Thus, the
power-on reset delay will also be 16 times longer. The default setting is “Slow mode”
disabled.
1.3
MCU Structure
Figure 1-1 shows a block diagram of the MC68HC05SU3A MCU.
TPG
GENERAL DESCRIPTION
MC68HC05SU3A
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