Datasheet

MCU Block Diagram
MC9S08QE32 Series MCU Data Sheet, Rev. 7
Freescale Semiconductor 3
1 MCU Block Diagram
The block diagram, Figure 1, shows the structure of the MC9S08QE32 MCU.
Figure 1. MC9S08QE32 Series Block Diagram
IIC MODULE (IIC)
USER FLASH
USER RAM
HCS08 CORE
CPU
BDC
PTB7/SCL/EXTAL
PORT B
HCS08 SYSTEM CONTROL
RESET S AND INTERRUPTS
MODES OF OPERATION
POWER MANAGEMENT
COP
LVD
PTB6/SDA/XTAL
PTB5/TPM1CH1/SS
PTB4/TPM2CH1/MISO
PTB3/KBI1P7/MOSI/ADP7
PTB2/KBI1P6/SPSCK/ADP6
VOLTAGE REGULATOR
PORT A
PTA1/KBI1P1/TPM2CH0/ADP1/ACMP1–
ANALOG COMPARATOR
(ACMP1)
LOW-POWER OSCILLATOR
50.33 MHz INTERNAL CLOCK
SOURCE (ICS)
31.25 kHz to 38.4 kHz
1 MHz to 16 MHz
(XOSCVLP)
V
SS
V
DD
ANALOG-TO-DIGITAL
CONVERTER (ADC12)
10-CHANNEL, 12-BIT
PTB1/KBI1P5/TxD1/ADP5
PTB0/KBI1P4/RxD1/ADP4
PORT C
PTC7 /TxD2 /ACMP2–
PTC6
/RxD2/ ACMP2+
PTC5/ TPM3CH5/ACMP2O
PTC4/TPM3CH4
REAL-TIME COUNTER
(MC9S08QE32 = 32768 BYTES)
(MC9S08QE16 = 16384 BYTES)
(MC9S08QE32 = 2048 BYTES)
(MC9S08QE16 = 1024 BYTES)
PTA3/KBI1P3/SCL/ADP3
PTA2/KBI1P2/SDA/ADP2
PTA0/KBI1P0/TPM1CH0/ADP0/ACMP1+
PTA4/ACMP1O/BKGD/MS
PTA5/IRQ/TPM1CLK/RESET
IRQ
pins not available on 28-pin packages
(RTC)
ANALOG COMPARATOR
(ACMP2)
PTA7/TPM2CH2/ADP9
PTA6/TPM1CH2/ADP8
PTC3/TPM3CH3
PTC2/TPM3CH2
PTC1/TPM3CH1
PTC0/TPM3CH0
V
SSAD
/V
REFL
V
DDAD
/V
REFH
pins not available on 28-pin, 32-pin, or 44-pin packages
BKGD/MS
IRQ
EXTAL
XTAL
V
REFL
V
REFH
SCL
SDA
MISO
MOSI
SPSCK
SS
RxD1
TxD1
DEBUG MODULE (DBG)
ACMP1O
ACMP1–
ACMP1+
ACMP2O
ACMP2–
ACMP2+
ADP9–ADP0
TPM1CLK
TPM1CH2–TPM1CH0
3-CHANNEL TIMER/PWM
MODULE (TPM1)
KEYBOARD INTERRUPT
MODULE (KBI2)
KBI2P7–KBI2P0
V
SSAD
V
DDAD
V
SSAD
Notes: When PTA5 is configured as RESET, pin becomes bi-directional with output being open-drain drive containing an internal pullup device.
When PTA4 is configured as BKGD, pin becomes bi-directional.
For the 28-pin packages, V
SSAD
/V
REFL
and V
DDAD
/V
REFH
are double bonded to V
SS
and V
DD
respectively.
PORT D
PTD7/KBI2P7
PTD6/KBI2P6
PTD5/KBI2P5
PTD4/KBI2P4
PTD3/KBI2P3
PTD2/KBI2P2
PTD1/KBI2P1
PTD0/KBI2P0
PORT E
PTE7/TPM3CLK
PTE6
PTE5
PTE4
PTE3/SS
PTE2/MISO
PTE1/MOSI
PTE0/TPM2CLK/SPSCK
pins not available on 28-pin or 32-pin packages
RxD2
TxD2
INTERFACE MODULE(SCI2)
SERIAL COMMUNICATIONS
INTERFACE MODULE(SCI1)
SERIAL COMMUNICATIONS
SERIAL PERIPHERAL
INTERFACE MODULE(SPI)
TPM2CLK
TPM2CH2–TPM2CH0
3-CHANNEL TIMER/PWM
MODULE (TPM2)
TPM3CLK
TPM3CH5–TPM3CH0
6-CHANNEL TIMER/PWM
MODULE (TPM3)
KEYBOARD INTERRUPT
MODULE (KBI1)
KBI1P7–KBI1P0
V
DDAD
The 48-pin package is the only package with the option of having the SPI pins (SS, MISO, MOSI, and SPSCK) available on PTE3-0 pins.