USB-100 Fujitsu Semiconductor America Inc, USB-100 Datasheet - Page 112

• Manufacturer Part Number: USB-100
• Description: KIT STARTER FOR USB
• Manufacturer: Fujitsu Semiconductor America Inc
• Type: MCUr

Specifications of USB-100

• Contents: Board, Cable
• For Use With/related Products: MB91F662
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 865-1108

interface. The features are listed below.
access the FRAM. The commands are listed below.
WREN
WRDI
RDSR
WRSR
READ
WRITE
9.2 Details on the FRAM MB85RS256
The MB85RS256 is a stand-alone FRAM device with a 256-Kbit capacity that supports the SPI
<Features>
- Bit configuration: 32,768 words x 8 bits
- Operating power supply voltage: 3.0 V to 3.6 V
- Operating frequency: 15 MHz (Max)
- Serial Peripheral Interface: SPI
- Operating temperature range: -20°C to 85°C
- Data retention: 10 years (+ 55°C)
- Read-write cycles: 10
- Package: 8-pin plastic SOP (FPT-8P-M02)
<Connections>
<OP-CODE>
The MB85RS256 accepts six commands specified in op-code. These commands are used to
Code name
Figure 11-2 shows a sample method of connection with the microcontroller (MCU).
MCU
Figure 11.2-1. FRAM connection with the microcontroller (MCU)
HOLD(GPIO)
Set Write Enable Latch
Read Status Register
Write Status Register
Read Memory Code
Write Memory Code
Reset Write Enable Latch
CS(GPIO)
Description
10
SCK
cycles/bit (min)
SO
SI
Table 11.2-1 MB85RS256
111
0x06 （0000110
0x04 （0000100
0x05 （0000101
0x01 （0000001
0x03 （0000011
0x02 （0000010
SCK
SI
SO
CS
HOLD
Op-code (Hex) (binary)
FRAM
B
B
B
B
B
B
）
）
）
）
）
）