S9S12GN48F1VLC Freescale Semiconductor, S9S12GN48F1VLC Datasheet - Page 675

• Manufacturer Part Number: S9S12GN48F1VLC
• Description: 16-bit Microcontrollers - MCU S12CORE,64K FLASH,AU
• Manufacturer: Freescale Semiconductor

Specifications of S9S12GN48F1VLC

• Rohs: yes
• Core: S12
• Processor Series: MC9S12G
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 48 KB
• Data Ram Size: 4 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.13 V to 5.5 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-32
• Mounting Style: SMD/SMT

20.3.2.7
The SCISR1 and SCISR2 registers provides inputs to the MCU for generation of SCI interrupts. Also,
these registers can be polled by the MCU to check the status of these bits. The flag-clearing procedures
require that the status register be read followed by a read or write to the SCI data register.It is permissible
to execute other instructions between the two steps as long as it does not compromise the handling of I/O,
but the order of operations is important for flag clearing.
Read: Anytime
Write: Has no meaning or effect
Freescale Semiconductor
Module Base + 0x0004
Reset
Field
RWU
SBK
1
0
W
R
TDRE
Receiver Wakeup Bit — Standby state
0 Normal operation.
1 RWU enables the wakeup function and inhibits further receiver interrupt requests. Normally, hardware wakes
Send Break Bit — Toggling SBK sends one break character (10 or 11 logic 0s, respectively 13 or 14 logics 0s
if BRK13 is set). Toggling implies clearing the SBK bit before the break character has finished transmitting. As
long as SBK is set, the transmitter continues to send complete break characters (10 or 11 bits, respectively 13
or 14 bits).
0 No break characters
1 Transmit break characters
SCI Status Register 1 (SCISR1)
1
7
the receiver by automatically clearing RWU.
TC
= Unimplemented or Reserved
1
6
Table 20-10. SCICR2 Field Descriptions (continued)
Figure 20-10. SCI Status Register 1 (SCISR1)
MC9S12G Family Reference Manual, Rev.1.23
RDRF
0
5
IDLE
0
4
Description
OR
0
3
Serial Communication Interface (S12SCIV5)
NF
0
2
FE
0
1
PF
0
0
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