MC68HC908AS32A
Data Sheet
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MC68HC908AS32A Data Sheet, Rev. 2.0
Freescale Semiconductor
3
Revision History
The following revision history table summarizes changes contained in this document. For your
convenience, the page number designators have been linked to the appropriate location.
Revision History
Date
Revision
Level
Description
Reformatted to meet new publications guidelines.
Modules updated with additional data
September,
2005
1.0
1.4.16 BDLC Receive Pin (BDRxD) — Corrected name of BDLC receive pin
to BDRxD.
Removed Keyboard Interface Module
Removed Timer Interface Module B
Removed all references to TIMB and TBCLK
Figure 1-3. 64-Pin QFP Assignments (Top View)
— Added pin assignment
diagram for the 64-pin QFP.
May,
2006
Figure 2-2. I/O Data, Status and Control Registers
— Corrected two register
entries:
SPI Status and Control Register (SPSCR)
FLASH Control Register (FLCR)
Chapter 20 Ordering Information and Mechanical Specifications
— Added
information pertaining to the 64-pin quad flag pack (QFP).
Page
Number(s)
Throughout
25
N/A
N/A
23
2.0
32
38
271
MC68HC908AS32A Data Sheet, Rev. 2.0
4
Freescale Semiconductor
List of Chapters
Chapter 1 General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chapter 2 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Chapter 3 Analog-to-Digital Converter (ADC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Chapter 4 Byte Data Link Controller (BDLC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Chapter 5 Clock Generator Module (CGM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Chapter 6 Configuration Register (CONFIG1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Chapter 7 Configuration Register (CONFIG2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Chapter 8 Computer Operating Properly (COP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Chapter 9 Central Processor Unit (CPU). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Chapter 10 External Interrupt Module (IRQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Chapter 11 Low-Voltage Inhibit (LVI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Chapter 12 Programmable Interrupt Timer (PIT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Chapter 13 Input/Output Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Chapter 14 Serial Communications Interface (SCI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Chapter 15 System Integration Module (SIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Chapter 16 Serial Peripheral Interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Chapter 17 Timer Interface Module (TIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Chapter 18 Development Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Chapter 19 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Chapter 20 Ordering Information and Mechanical Specifications . . . . . . . . . . . . . . . . . . 271
MC68HC908AS32A Data Sheet, Rev. 2.0
Freescale Semiconductor
5
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