Nuvoton NuMicro MS51PC0AE - ISO 7816-3 Interface (SC0~2 & UART2 ~ 4)

MS51
Nov. 28, 2019 Page 387 of 491 Rev 1.00
MS51 32K SERIES TECHNICAL REFERENCE MANUAL
6.10 ISO 7816-3 Interface (SC0~2 & UART2 ~ 4)
6.10.1 Overview
The MS51 32K series provides ISO 7816-3 Interface controller (SC controller) with asynchronous
protocal based on ISO/IEC 7816-3 standard. Software controls GPIO pins as the smartcard reset
function and card detection function. This controller also provides UART emulation for high precision
baud rate communication.
RX_FIFO TX_FIFO
TX/RX
Control Unit
RX Shift
Register
TX Shift
Register
ETU Clock
Generator
Control and Status
Registers
Baud Rate
Generator
Internal Data Bus
TX_OUTRX_IN
Figure 6.10-1 SC Controller Block Diagram
 ISO-7816-3 T = 0, T = 1 compliant
 Programmable transmission clock frequency
 Programmable extra guard time selection
 Supports auto inverse convention function
 Supports UART mode
– Full duplex, asynchronous communications
– Supports programmable baud rate generator for each channel
– Programmable transmitting data delay time between the last stop bit leaving the TX-
FIFO and the de-assertion by setting SCnEGT register
– Programmable even, odd or no parity bit generation and detection
– Programmable stop bit, 1 or 2 stop bit generation
Following is the ISO 7816-3 multi function pin define
URAT Pin
SC Pin
Pin Name
SFR Define
SFR Byte Name
SFR Bit Name
Value
UART2_TXD
SC0_CLK
P0.3
AUXR2[7:6]
UART2TXP
01
P3.0
10
UART2_RXD
SC0_DAT
P0.4
AUXR2[5:4]
UART2RXP
01