Datasheet

Pins and Connections
MC9S08GT16A/GT8A Data Sheet, Rev. 1
Freescale Semiconductor 27
2.3 Recommended System Connections
Figure 2-5 shows pin connections that are common to almost all MC9S08GT16A application systems. A
more detailed discussion of system connections follows.
Figure 2-5. Basic System Connections
V
DD
V
SS
XTAL
EXTAL
BKGD/MS
RESET
OPTIONAL
MANUAL
RESET
PORT
A
V
DD
BACKGROUND HEADER
C2
C1
X1
R
F
R
S
C
BLK
10 µF
+
3 V
+
SYSTEM
POWER
I/O AND
PERIPHERAL
INTERFACE TO
SYSTEM
APPLICATION
PTA0/KBIP0
PTA1/KBIP1
PTA2/KBIP2
PTA3/KBIP3
PTA4/KBIP4
PTA5/KBIP5
PTA6/KBIP6
PTA7/KBIP7
V
DD
PORT
B
PTB0/ADP0
PTB1/ADP1
PTB2/ADP2
PTB3/ADP3
PTB4/ADP4
PTB5/ADP5
PTB6/ADP6
PTB7/ADP7
PORT
C
PTC0/TxD2
PTC1/RxD2
PTC2/SDA
PTC3/SCL
PTC4
PTC5
PTC6
PTC7
PORT
D
PTD0/TPM1CLK/TPM1CH0
PTD1/TPM1CH1
PTD2/TPM1CH2
PTD3/TPM2CLK/TPM2CH0
PTD4/TPM2CH1
PORT
E
PTE0/TxD1
PTE1/RxD1
PTE2/
SS
PTE3/MISO
PTE4/MOSI
PTE5/SPSCK
PORT
G
PTG0/BKDG/MS
PTG1/XTAL
PTG2/EXTAL
PTG3
IRQ
ASYNCHRONOUS
INTERRUPT
INPUT
NOTES:
1. Not required if using the internal oscillator option.
2. The 48-pin QFN has 2 V
SS
pins (V
SS1
and V
SS2
), both of which must be connected to GND.
3. RC filters on
RESET and IRQ are recommended for EMC-sensitive applications and systems.
NOTE 1
MC9S08GT16A
V
DDAD
V
SSAD
C
BYAD
0.1 µF
V
REFL
V
REFH
V
SS
C
BY
0.1 µF
NOTE4
V
DD
4.7 kΩ–10 kΩ
0.1 µF
NOTE 3
NOTE 3
V
DD
4.7 kΩ–10 kΩ
0.1 µF