Generic Expansion I / O

ZEN1751F(Generic Expansion I / O)

ZEN1751F(Generic Expansion I / O) ZEN1751F(Generic Expansion I / O)

The ZEN1751F is a GPIO LSI that combines functions commonly used in video equipment and FA equipment into one chip.
The installed I / O is a general purpose input / output port, I2C bus master, SPI port, PWM output, infrared remote control input, UART, pulse counter. Since each block can be individually shifted to the standby mode, a low power consumption system can be realized.
In order to flexibly deal with various operation rate demands of each peripheral, each block can select the operation clock from two kinds of clock sources (however, general-purpose I / O and I2C block are exclusively for SCLK).
* I2C is a trademark of Philips Corporation.

Main features

CPU I / F 8 bit parallel interface
General purpose I / O port Max 56 pcs (40 of which are shared with other functions)
Port Port A: 16 dedicated ports (I / O / interrupt setting is possible for each one)
Port B: 8 dual-purpose ports (I / O setting can be set for each one)
Port C: 8 dual-purpose ports (I / O setting is possible for each one)
Port D: 8 dual-purpose ports (I / O setting can be set for each one)
Port E: 4 dual purpose ports (I / O setting can be set for each one)
Port F: 12 dual purpose ports (input only)
Io = ± 4 mA
Can be set to standby mode (operation clock is stopped) for each block
I2C bus (master) Max 12 ch (used by switching) [SPI / UART and terminal sharing]
SPI port (4 wire serial) Max 6ch (switch used)[12C/UART and terminal sharing]
UART (compatible with 16550) Max 4 ch (independent)[I2C/SPI and terminal sharing]
PWM Max3ch (independent)
Accuracy 8bit
Infrared remote control input Max1ch
Accuracy 16bit
Pulse counter Max 12 ch (in single phase mode)
Max 4 ch (in 2-phase pulse mode)
Count accuracy Single-phase mode: 8 bit
In 2-phase pulse mode: 24 bit
System clock Max50MHz
Peripheral clock Max25MHz(However, peripheral clock ≤ system clock / 2)
Power-supply voltage 3.3 V single (input terminal 5 V tolerant)
Package TQFP 100 pin (14 × 14 mm, 0.5 mm pitch)

Data download *Japanese document

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