MC9S08QG8_09 Datasheet, PDF (22/314 Pages) Freescale Semiconductor, Inc – HCS08 Microcontrollers

Chapter 1 Device Overview
1.1.2 MCU Block Diagram
HCS08 CORE
CPU
BDC
HCS08 SYSTEM CONTROL
RESETS AND INTERRUPTS
MODES OF OPERATION
POWER MANAGEMENT
DEBUG MODULE (DBG)
8-BIT MODULO TIMER
MODULE (MTIM)
IIC MODULE (IIC)
BKGD/MS
IRQ
TCLK
SCL
SDA
PTA5//IRQ/TCLK/RESET
PTA4/ACMPO/BKGD/MS
PTA3/KBIP3/SCL/ADP3
PTA2/KBIP2/SDA/ADP2
RTI
COP
IRQ
LVD
4
8-BIT KEYBOARD
INTERRUPT MODULE (KBI)
4
ACMPO
USER FLASH
(MC9S08QG8 = 8192 BYTES)
(MC9S08QG4 = 4096 BYTES)
ANALOG COMPARATOR
(ACMP)
ACMP–
ACMP+
4
PTA1/KBIP1/ADP1/ACMP–
PTA0/KBIP0/TPMCH0/ADP0/ACMP+
USER RAM
(MC9S08QG8 = 512 BYTES)
(MC9S08QG4 = 256 BYTES)
16-MHz INTERNAL CLOCK
SOURCE (ICS)
LOW-POWER OSCILLATOR
31.25 kHz to 38.4 kHz
1 MHz to 16 MHz
(XOSC)
V_SS
10-BIT
ANALOG-TO-DIGITAL
CONVERTER (ADC)
16-BIT TIMER/PWM
MODULE (TPM)
SERIAL PERIPHERAL
INTERFACE MODULE (SPI)
SERIAL COMMUNICATIONS
INTERFACE MODULE (SCI)
4
TPMCH0
TPMCH1
SS
MISO
MOSI
SPSCK
TxD
RxD
PTB7/SCL/EXTAL
PTB6/SDA/XTAL
PTB5/TPMCH1/SS
PTB4/MISO
PTB3/KBIP7/MOSI/ADP7
PTB2/KBIP6/SPSCK/ADP6
PTB1/KBIP5/TxD/ADP5
PTB0/KBIP4/RxD/ADP4
V_DD
VOLTAGE REGULATOR
V_DDA
V_SSA
V_REFH
V_REFL
EXTAL
XTAL
NOTES:
1 _{Not all pins or pin functions are available on all devices; see Table 1-1 for available functions on each device.}
2 _{Port pins are software configurable with pullup device if input port.}
3 _{Port pins are software configurable for output drive strength.}
4 _{Port pins are software configurable for output slew rate control.}
5 _{IRQ contains a software configurable (IRQPDD) pullup device if PTA5 enabled as IRQ pin function (IRQPE = 1).}
6 _{RESET contains integrated pullup device if PTA5 enabled as reset pin function (RSTPE = 1).}
7 _{PTA4 contains integrated pullup device if BKGD enabled (BKGDPE = 1).}
8 _{SDA and SCL pin locations can be repositioned under software control (IICPS), defaults on PTA2 and PTA3.}
9 _{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.
Figure 1-1. MC9S08QG8/4 Block Diagram
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
20
Freescale Semiconductor