mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 7
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mc9s12e256
Manufacturer Part Number
mc9s12e256
Description
Hcs12 Microcontrollers 16-bit Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12E256.pdf
(602 pages)
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Section Number
1.1
1.2
1.3
1.4
Freescale Semiconductor
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Device Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Signal Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Detailed Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
1.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
1.1.2 Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
1.1.3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
1.2.1 Detailed Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
1.2.2 Part ID Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
1.3.1 Device Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
1.3.2 Signal Properties Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
1.4.1 EXTAL, XTAL — Oscillator Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
1.4.2 RESET — External Reset Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
1.4.3 TEST — Test Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
1.4.4 XFC — PLL Loop Filter Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
1.4.5 BKGD / TAGHI / MODC — Background Debug, Tag High & Mode Pin . . . . . . . . . . . 61
1.4.6 PA[7:0] / ADDR[15:8] / DATA[15:8] — Port A I/O Pins . . . . . . . . . . . . . . . . . . . . . . . . 61
1.4.7 PB[7:0] / ADDR[7:0] / DATA[7:0] — Port B I/O Pins . . . . . . . . . . . . . . . . . . . . . . . . . . 61
1.4.8 PE7 / NOACC / XCLKS — Port E I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
1.4.9 PE6 / MODB / IPIPE1 — Port E I/O Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
1.4.10 PE5 / MODA / IPIPE0 — Port E I/O Pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
1.4.11 PE4 / ECLK— Port E I/O Pin 4 / E-Clock Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
1.4.12 PE3 / LSTRB / TAGLO — Port E I/O Pin 3 / Low-Byte Strobe (LSTRB) . . . . . . . . . . 63
1.4.13 PE2 / R/W — Port E I/O Pin 2 / Read/Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
1.4.14 PE1 / IRQ — Port E input Pin 1 / Maskable Interrupt Pin . . . . . . . . . . . . . . . . . . . . . . . 63
1.4.15 PE0 / XIRQ — Port E input Pin 0 / Non Maskable Interrupt Pin . . . . . . . . . . . . . . . . . . 64
1.4.16 PK7 / ECS / ROMCTL — Port K I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
1.4.17 PK6 / XCS — Port K I/O Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
1.4.18 PK[5:0] / XADDR[19:14] — Port K I/O Pins [5:0] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
1.4.19 PAD[15:0] / AN[15:0] / KWAD[15:0] — Port AD I/O Pins [15:0] . . . . . . . . . . . . . . . . 65
1.4.20 PM7 / SCL — Port M I/O Pin 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
1.4.21 PM6 / SDA — Port M I/O Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
1.4.22 PM5 / TXD2 — Port M I/O Pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
1.4.23 PM4 / RXD2 — Port M I/O Pin 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
1.4.24 PM3 — Port M I/O Pin 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
1.4.25 PM1 / DAO1 — Port M I/O Pin 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
MC9S12E256 Device Overview (MC9S12E256DGV1)
MC9S12E256 Data Sheet, Rev. 1.08
Contents
Chapter 1
Title
Page
7
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