sc16c2550b NXP Semiconductors, sc16c2550b Datasheet - Page 24

• Manufacturer Part Number: sc16c2550b
• Description: 5 V, 3.3 V And 2.5 V Dual Uart, 5 Mbit/s Max. , With 16-byte Fifos
• Manufacturer: NXP Semiconductors

NXP Semiconductors
SC16C2550B_4
Product data sheet
7.10 SC16C2550B external reset condition
7.9 Scratchpad Register (SPR)
The SC16C2550B provides a temporary data register to store 8 bits of user information.
Table 21.
Table 22.
Register
IER
FCR
ISR
LCR
MCR
LSR
MSR
SPR
DLL
DLM
Output
TXA, TXB
OP2A, OP2B
RTSA, RTSB
DTRA, DTRB
INTA, INTB
Reset state for registers
Reset state for outputs
Reset state
IER[7:0] = 0
FCR[7:0] = 0
ISR[7:1] = 0; ISR[0] = 1
LCR[7:0] = 0
MCR[7:0] = 0
LSR[7] = 0; LSR[6:5] = 1; LSR[4:0] = 0
MSR[7:4] = input signals; MSR[3:0] = 0
SFR[7:0] = 1
DLL[7:0] = X
DLM[7:0] = X
Reset state
logic 1
logic 1
logic 1
logic 1
3-state condition
5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs
Rev. 04 — 15 February 2007
SC16C2550B
© NXP B.V. 2007. All rights reserved.
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