AN171: AB1 Prototyping Board User’s Guide

AN171
AB1 P R O T O T Y P I N G B O A R D U S E R ’ S G U I D E
1.0. Summary
The AB1 prototyping board provides a 3 x 3.75" prototyping area (0.1" center through-hole) with access to all MCU
I/O signals. Access to I/O signals is provided by a 96-pin, high density connector that mates directly to the expansion connector of C8051F020-TB, C8051F040-TB, C8051F060-TB, and C8051F120-TB target boards. A 128 kB
SRAM is installed on the board which can be connected to the MCU's External Memory Interface by installing a
single 2-pin jumper (included).
2.0 Features
96 pin 3 row connector
128 kB SRAM Part number IDT71V124
SRAM disable jumper J1(open = disabled , closed = enabled )
Duplicate of connector pins for easy access to signals
Digital and analog supply and ground rails
3.0 SRAM Details
The IDT71V124SA12PH is a high-speed with 12 nanosecond access and cycle time static SRAM. For more further
information on access and cycle times for this SRAM please refer to the IDT71V124 data sheet available at http://
www.idt.com/docs/71V124SA_DS_30147.pdf. To enable the SRAM jumper J1 must be installed and the /CS
Chip Select pin must be pulled low. The SRAM utilizes the External Memory Interface from F02X and later
devices, more information on using this interface can be found in Section 16 of the C8051F02x Data Sheet. When
enabled the SRAM uses ports 5, 6, and 7 and the upper nibble of port 4. The pin-out is as follows:
Signal Name
SRAM Pin(s)
C8051F02XTB
Connection
Description
/WE
12
P4.7
Write Enable
/CS
5
P4.4(J1 closed)
Chip Select
/OE
28
P4.6
Output Enable
VDD
8,24
+3 VD
Digital Power
GND
9,25
GND
Digital Ground
I/O0…I/O7
6,7,10,11,22,23,26,27
P7.0…P7.7
Data Bus
A0…A7
1,2,3,4,13,14,15,16
P6.0…P6.7
Address Bus Low Byte
A8...A15
17,18,19,20,21,29,30,31
P5.0…P5.7
Address Bus High Byte
A16
32
P4.5
Bank Select
Rev. 0.3 1/04
Copyright © 2004 by Silicon Laboratories
AN171
AN171
4.0 Hardware Setup
A compatible target board is connected to the accessory board as shown in Figure 1.
AC/DC
Adapter
Accessory Board
Target Board
Figure 1. Hardware Setup
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AN171
Notes:
Rev. 0.3
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AN171
Contact Information
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Austin, TX 78735
Tel: 1+(512) 416-8500
Fax: 1+(512) 416-9669
Toll Free: 1+(877) 444-3032
Email: [email protected]
Internet: www.silabs.com
The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice.
Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from
the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features
or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories assume any liability
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