DEMO908GZ60E Freescale Semiconductor, DEMO908GZ60E Datasheet - Page 12

• Manufacturer Part Number: DEMO908GZ60E
• Description: BOARD DEMO FOR 908GZ60 MCU
• Manufacturer: Freescale Semiconductor
• Series: HC08GRr
• Type: MCUr

Specifications of DEMO908GZ60E

• Design Resources: DEMO908GZ60E Schematic
• Contents: Board, Cable, CD
• Processor To Be Evaluated: 908GZ
• Data Bus Width: 16 bit
• Interface Type: RS-232
• For Use With/related Products: 68HC908GZ60
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PTA0/KBD0/AD8 9
PTA1/KBD1/AD9 11
PTD0/SS*/MCLK 23
D E M O 9 0 8 R G 6 0
Table 1: MCU IO Connectors
Communications
The DEMO908GZ60 module provides a single serial communications port and a single CAN
communications port. The Enhanced SCI port supports both RS-232 and Local Interconnect
Network (LIN) protocols. An option jumper (COM_SEL) selects between the communications
protocol implemented. The CAN port utilizes a direct data connection to the MCU and pro-
vides a 3-pin header to connect off-board circuits.
RS-232 Communications
An RS-232 translator (U2) provides RS-232 signal level to TTL/CMOS logic level translation on
the COM port. Signals TXD and RXD are routed between the transceiver and the MCU.
These signals are also routed to connector J1. RS-232 communication signals input on J1
must be TTL/CMOS logic levels; no translation support is provided through this path. The
transceiver output may also be driven off-module if a suitable interface is used. As added de-
velopment support, hardware flow control signals RTS and CTS are available on the logic side
of U3. These signals are routed to vias located near the transceiver (U3). RTS has been bi-
ased properly to support 2-wire RS-232 communications.
Use of the J1 connector to input RS-232 signals requires disabling the on-board RS-232 trans-
ceiver to prevent signal corruption. Disabling the on-board transceiver is accomplished by re-
moving the COM_SEL jumper. Details on the COM_SEL jumper are shown in the table below.
The figure shows the jumper position to enable RS-232 communications.
PTD3/SPSCK 21
PTD4/T1CH0 13
PTD5/T1CH1 15
PTD2/MOSI 17
PTD1/MISO 19
PTE1/RXD 7
PET0/TXD 5
PCT2 25
PCT3 27
PCT4 29
PCT5 31
PCT6 33
PTE2 35
PTE3 37
PTE4 39
GND 3
V
X
1
J1
10 PTB0/AD0
12 PTB1/AD1
14 PTB2/AD2
16 PTB3/AD3
18 PTB4/AD4
20 PTB5/AD5
22 PTB6/AD6
24 PTB7/AD7
26 PTC0/CANTX
28 PTC1/CANRX
30 PTA24/KBD4
32 PTA5/KBD5/AD13
34 PTD6/T2CH0
36 PTD7/T2CH1
38 PTA6/KBD6/AD14
40 PTA7/KBD7/AD15
2 IRQ*
4 RESET*
6 PTA2/KBD2/AD10
8 PTA3/KBD3/AD11
12
PTF4/T2CH2 57
PTF5/T2CH3 59
PTF6/T2CH4 61
PTF7/T2CH5 63
PTG0/AD16 65
PTG1/AD17 67
PTG2/AD18 69
PTG3/AD19 71
PTG4/AD20 73
PTG5/AD21 75
PTG6/AD22 77
PTG7/AD23 79
PTE2 41
PTE3 43
PTE4 45
PTE5 47
PTF0 49
PTF1 51
PTF2 53
PTF3 55
J2
A U G U S T
42 NC
44 NC
46 NC
48 NC
50 NC
52 NC
54 NC
56 NC
58 NC
60 NC
62 NC
64 NC
66 NC
68 NC
70 NC
72 NC
74 NC
76 NC
78 NC
80 NC
6 ,
2 0 0 4