ST92T163R4T1 STMicroelectronics, ST92T163R4T1 Datasheet - Page 167

• Manufacturer Part Number: ST92T163R4T1
• Description: Microcontrollers (MCU) OTP EPROM 20K USB/I2
• Manufacturer: STMicroelectronics

Specifications of ST92T163R4T1

• Data Bus Width: 8 bit, 16 bit
• Program Memory Type: EPROM
• Program Memory Size: 20 KB
• Data Ram Size: 2 KB
• Interface Type: I2C, SCI, USB
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 64
• Number Of Timers: 2
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-64
• Minimum Operating Temperature: 0 C
• On-chip Adc: 8 bit
• Lead Free Status / Rohs Status: No

SERIAL COMMUNICATIONS INTERFACE (Cont’d)
INTERRUPT MASK REGISTER (IMR)
R246 - Read/Write
Reset value: 0xx00000
Bit 7 = BSN: Buffer or shift register empty inter-
rupt .
This bit selects the source of the transmitter regis-
ter empty interrupt.
0: Select a Shift Register Empty as source of a
1: Select a Buffer Register Empty as source of a
Bit 6 = RXEOB: Received End of Block.
This bit is set by hardware only and must be reset
by software. RXEOB is set after a receiver DMA
cycle to mark the end of a data block.
0: Clear the interrupt request.
1: Mark the end of a received block of data.
Bit 5 = TXEOB: Transmitter End of Block.
This bit is set by hardware only and must be reset
by software. TXEOB is set after a transmitter DMA
cycle to mark the end of a data block.
0: Clear the interrupt request.
1: Mark the end of a transmitted block of data.
BSN
Transmitter Register Empty interrupt.
Transmitter Register Empty interrupt.
7
RXEOB TXEOB
RXE
RXA
RXB
ST92163 - SERIAL COMMUNICATIONS INTERFACE (SCI)
RXDI
TXDI
0
Bit 4 = RXE: Receiver Error Mask.
0: Disable Receiver error interrupts (OE, PE, and
1: Enable Receiver error interrupts.
Bit 3 = RXA: Receiver Address Mask .
0: Disable Receiver Address interrupt (RXAP
1: Enable Receiver Address interrupt.
Bit 2 = RXB: Receiver Break Mask .
0: Disable Receiver Break interrupt (RXBP pend-
1: Enable Receiver Break interrupt.
Bit 1 = RXDI: Receiver Data Interrupt Mask .
0: Disable Receiver Data Pending and Receiver
1: Enable Receiver Data Pending and Receiver
Note: RXDI has no effect on DMA transfers.
Bit 0 = TXDI: Transmitter Data Interrupt Mask .
0: Disable Transmitter Buffer Register Empty,
1: Enable Transmitter Buffer Register Empty,
Note: TXDI has no effect on DMA transfers.
FE pending bits in the S_ISR register).
pending bit in the S_ISR register).
ing bit in the S_ISR register).
End of Block interrupts (RXDP and RXEOB
pending bits in the S_ISR register).
End of Block interrupts.
Transmitter Shift Register Empty, or Transmitter
End of Block interrupts (TXBEM, TXSEM, and
TXEOB bits in the S_ISR register).
Transmitter Shift Register Empty, or Transmitter
End of Block interrupts.
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