AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 102

• Manufacturer Part Number: AT89C5132
• Manufacturer: Atmel Corporation

Specifications of AT89C5132

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-12C
• Max I/o Pins: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Uart: 1
• Adc Channels: 2
• Adc Resolution (bits): 10
• Adc Speed (ksps): 22.7
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 2
• Isp: UART/USB
• Watchdog: Yes

102
AT89C5132
Reset Value = 1111 1111b
Table 84. MMCMD Register
MMCMD (S:DDh) – MMC Command Register
Reset Value = 1111 1111b
Number
Number
MC7
7 - 0
Bit
Bit
2
1
0
7
Mnemonic Description
Mnemonic Description
MC7:0
F1FM
F2EM
F1EM
MC6
Bit
Bit
6
FIFO 1 Full Interrupt Mask Bit
Set to prevent F1FI flag from generating an MMC interrupt.
Clear to allow F1FI flag to generate an MMC interrupt.
FIFO 2 Empty Interrupt Mask Bit
Set to prevent F2EI flag from generating an MMC interrupt.
Clear to allow F2EI flag to generate an MMC interrupt.
FIFO 1 Empty Interrupt Mask Bit
Set to prevent F1EI flag from generating an MMC interrupt.
Clear to allow F1EI flag to generate an MMC interrupt.
MMC Command Receive Byte
Output (read) register of the response FIFO.
MMC Command Transmit Byte
Input (write) register of the command FIFO.
MC5
5
MC4
4
MC3
3
MC2
2
MC1
1
4173E–USB–09/07
MC0
0