参数资料
型号: SAA5491H/NNN
厂商: NXP SEMICONDUCTORS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80
封装: 14 X 20 MM, 2.80 MM HEIGHT, PLASTIC, SOT-318-2, QFP-80
文件页数: 14/72页
文件大小: 498K
代理商: SAA5491H/NNN
1998 Dec 14
21
Philips Semiconductors
Preliminary specication
Economy teletext and TV microcontrollers
SAA5x9x family
Serial Interface Data Register (S1DAT); note 1
DAT7 to DAT0
I2C-bus data
Serial Interface Status Register (S1STA) - READ only; note 1
STAT4 to STAT0
I2C-bus interface status
Serial Interface Data Register (S1BIT) - READ; note 2
SDI
I2C-bus data bit input
Serial Interface Data Register (S1BIT) - WRITE; note 2
SDO
I2C-bus data bit output
Serial Interface Interrupt Register (S1INT); note 2
SI
I2C-bus interrupt ag
Serial Interface Control Register (S1SCS) - READ; note 2
SDI
serial data input at SDA
SCI
serial clock input at SCL
CLH
clock LOW-to-HIGH transition ag
BB
bus busy ag
RBF
read bit nished ag
WBF
write bit nished ag
STR
clock stretching enable (logic 1)
ENS
enable serial I/O (logic 1)
Serial Interface Control Register (S1SCS) - WRITE; note 2
SDO
serial data output at SDA
SCO
serial clock output at SCL
CLH
clock LOW-to-HIGH transition ag
STR
clock stretching enable (logic 1)
ENS
enable serial I/O (logic 1)
Software ADC Control Register (SAD)
VHI
comparator output indicating that analog input voltage greater than DAC voltage (logic 1)
CH1 and CH0
ADC input channel selection bits; see Table 11
ST
initiate voltage comparison (logic 1); this bit is automatically reset to logic 0
SAD7 to SAD4
4 MSBs of DAC input value
REGISTER
FUNCTION
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