MCU Block Diagram

MC9S08JS16 Series MCU Data Sheet, Rev. 4

Freescale Semiconductor

3

1

MCU Block Diagram

The block diagram, Figure 1, shows the structure of the MC9S08JS16 series MCU.

Figure 1. MC9S08JS16 Series Block Diagram

8-BIT KEYBOARD

INTERRUPT MODULE (KBI)

USER FLASH (IN BYTES)

USER RAM (IN BYTES)

ON-CHIP ICE AND

DEBUG MODULE (DBG)

HCS08 CORE

CPU

NOTES:

1. Port pins are software configurable with pullup device if input port.

2. Pin contains software configurable pullup/pulldown device if IRQ is enabled (IRQPE = 1). Pulldown is enabled if

rising edge detect is selected (IRQEDG = 1).

4. RESET contains integrated pullup device if PTB1 enabled as reset pin function (RSTPE = 1).

5. Pin contains integrated pullup device.

6. When pin functions as KBI (KBIPEn = 1) and associated pin is configured to enable the pullup device, KBEDGn can

be used to reconfigure the pullup as a pulldown device.

PTA2/KBIP2/MOSI

HCS08 SYSTEM CONTROL

RESETS AND INTERRUPTS

MODES OF OPERATION

POWER MANAGEMENT

VOLTAGE

REGULATOR

COP

IRQ

LVD

LOW-POWER OSCILLATOR

MULTI-PURPOSE CLOCK

GENERATOR (MCG)

RESET

2-CHANNEL TIMER/PWM

MODULE (TPM)

PTA3/KBIP3/SPSCK

BKGD/MS

IRQ

KBIPx

TCLK

TPMCH0

TPMCH1

EXTAL

XTAL

USB

USB ENDPOINT

MODULE

RAM

FULL SPEED

USB

TRANSCEIVER

USBDP

USBDN

PTA6/KBIP6/RxD

PTA7/KBIP7/TxD

REAL-TIME COUNTER

(RTC)

PTA4/KBIP4/SS

PTA5/KBIP5/TPMCH1

8

SYSTEM

USB 3.3 V VOLTAGE REGULATOR

512

MC9S08JS16 = 16,384

PTA0/KBIP0/TPMCH0

PTA1/KBIP1/MISO

PTB3/BLMS

PTB2/BKGD/MS

PTB0/IRQ/TCLK

PTB1/RESET

PTB5/EXTAL

PTB4/XTAL

SERIAL PERIPHERAL

INTERFACE MODULE (SPI)

SPSCK

SS

MISO

MOSI

8-/16-BIT

8-BIT MODULO TIMER

MODULE (MTIM)

INTERFACE MODULE (SCI)

SERIAL COMMUNICATIONS

RxD

TxD

BDC

Bootloader ROM (IN BYTES)

4096

16-BIT Cyclic Redundancy

MODULE (CRC)

Check Generator

MC9S08JS8 = 8,192

MC9S08JS16L = 16,384

MC9S08JS8L = 8,192