SST89E58RD2-40-I-TQJE Microchip Technology, SST89E58RD2-40-I-TQJE Datasheet - Page 37

• Manufacturer Part Number: SST89E58RD2-40-I-TQJE
• Description: 4.5 To 5.5V FlashFlex 8-bit 8051 Microcontroller 44 TQFP 10x10x1mm TRAY
• Manufacturer: Microchip Technology
• Series: FlashFlex®r

Specifications of SST89E58RD2-40-I-TQJE

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 36
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 8K x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP
• Processor Series: FlashFlex51
• Core: C51
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 3
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

FlashFlex MCU
SST89E54RD2A/RDA / SST89E58RD2A/RDA
4.2.4.1 Chip-Erase
The Chip-Erase command erases all bytes in both memory
blocks. This command is only allowed when EA#=0 (exter-
nal memory execution). Additionally this command is not
permitted when the device is in level 4 locking. In all other
instances, this command ignores the Security Lock status
and will erase the security lock bits and re-map bits.
4.2.4.2 Block-Erase
The Block-Erase command erases all bytes in one of the
two memory blocks (Block 0 or Block 1). The selection of
the memory block to be erased is determined by the
(SFAH[7]) of the SuperFlash Address Register. For
SST89E5xRD2A/RDA, if SFAH[7] = 0b, the primary flash
memory Block 0 is selected. If SFAH[7:4] = EH, the sec-
ondary flash memory Block 1 is selected. The Block-Erase
command sequence for SST89E5xRD2A/RDA is as fol-
lows:
©2008 Silicon Storage Technology, Inc.
FIGURE
operation completion
MOV SFCM, #01H
SFST[2] indicates
Polling scheme
4-1: Chip-Erase
MOV SFDT, #55H
ORL SFCF, #40H
IAP Enable
Set-Up
indicates completion
MOV SFCM, #81H
Interrupt scheme
INT1 interrupt
1339 F08.0
37
4.2.4.3 Sector-Erase
The Sector-Erase command erases all of the bytes in a
sector. The sector size for the flash memory blocks is 128
Bytes. The selection of the sector to be erased is deter-
mined by the contents of SFAH and SFAL.
FIGURE
FIGURE
operation completion
operation completion
MOV SFCM, #0DH
MOV SFCM, #0BH
MOV SFAH, #00H
SFST[2] indicates
SFST[2] indicates
Polling scheme
Polling scheme
Erase Block 0
4-2: Block-Erase
4-3: Sector-Erase
MOV SFAH, #sector_addressH
MOV SFAL, #sector_addressL
Program sector address
ORL SFCF, #40H
MOV SFDT, #55H
ORL SFCF, #40H
IAP Enable
IAP Enable
Set-Up
OR
indicates completion
indicates completion
MOV SFCM, #8DH
MOV SFCM, #8BH
MOV SFAH, #F0H
Interrupt scheme
Interrupt scheme
Erase Block 1
INT1 interrupt
INT1 interrupt
S71339-02-000
Data Sheet
1339 F09.0
1339 F10.0
02/08