参数资料
型号: PSD4235F1-C-90MI
厂商: 意法半导体
英文描述: Flash In-System-Programmable Peripherals for 16-Bit MCUs
中文描述: Flash在系统可编程外设的16位微控制器
文件页数: 34/93页
文件大小: 503K
代理商: PSD4235F1-C-90MI
Preliminary Information
PSD4000 Series
31
The
PSD4000
Functional
Blocks
(cont.)
9.2 PLDs
The PLDs bring programmable logic functionality to the PSD4000. After specifying the
logic for the PLDs in PSDsoft, the logic is programmed into the device and available upon
power-up.
The PSD4000 contains two PLDs: the Decode PLD (DPLD), and the General Purpose
PLD (GPLD). The PLDs are briefly discussed in the next few paragraphs, and in more
detail in sections 9.2.1 and 9.2.2. Figure 10 shows the configuration of the PLDs.
The DPLD performs address decoding for internal components, such as memory,
registers, and I/O port selects.
The GPLD can be used to generate external chip selects, control signals or logic functions.
The GPLD has 24 outputs that are connected to Port A, B and C.
The AND array is used to form product terms. These product terms are specified using
PSDsoft. An Input Bus consisting of 66 signals is connected to the PLDs. The signals are
shown in Table 12. The complement of the 66 signals are also available as inputs to the
AND array.
Input Source
Input Name
Number
of Signals
MCU Address Bus
MCU Control Signals
Reset
Power Down
Port A Input
Port B Input
Port C Input
Port D Inputs
Port F Inputs
Page Register
Flash Programming Status Bit
A[15:0]
*
CNTL[2:0]
RST
PDN
PA[7-0]
PB[7-0]
PC[7-0]
PD[3:0]
PF[7:0]
PGR(7:0)
Rdy/Bsy
16
3
1
1
8
8
8
4
8
8
1
Table 12. DPLD and GPLD Inputs
NOTE:
The address inputs are A[19:4] in 80C51XA mode.
The Turbo Bit
The PLDs in the PSD4000 can minimize power consumption by switching to standby
when inputs remain unchanged for an extended time of about 70 ns. Setting the Turbo
mode bit to off (Bit 3 of the PMMR0 register) automatically places the PLDs into standby if
no inputs are changing. Turbo-off mode increases propagation delays while reducing
power consumption. Refer to the Power Management Unit section on how to set the Turbo
Bit. Additionally, five bits are available in the PMMR2 register to block MCU control signals
from entering the PLDs. This reduces power consumption and can be used only when
these MCU control signals are not used in PLD logic equations.
相关PDF资料
PDF描述
PSD4235F1-C-90U Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235F1-C-90UI Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235F2-15UI Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235F2-70UI Flash In-System-Programmable Peripherals for 16-Bit MCUs
PSD4235F2-90B81 Flash In-System-Programmable Peripherals for 16-Bit MCUs
相关代理商/技术参数
参数描述
PSD4235G2-70U 功能描述:SPLD - 简单可编程逻辑器件 5.0V 4M 70ns RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD4235G2-90U 功能描述:CPLD - 复杂可编程逻辑器件 5.0V 4M 90ns RoHS:否 制造商:Lattice 系列: 存储类型:EEPROM 大电池数量:128 最大工作频率:333 MHz 延迟时间:2.7 ns 可编程输入/输出端数量:64 工作电源电压:3.3 V 最大工作温度:+ 90 C 最小工作温度:0 C 封装 / 箱体:TQFP-100
PSD4235G2-90UI 功能描述:CPLD - 复杂可编程逻辑器件 5.0V 4M 90ns RoHS:否 制造商:Lattice 系列: 存储类型:EEPROM 大电池数量:128 最大工作频率:333 MHz 延迟时间:2.7 ns 可编程输入/输出端数量:64 工作电源电压:3.3 V 最大工作温度:+ 90 C 最小工作温度:0 C 封装 / 箱体:TQFP-100
PSD4235G2V-12UI 功能描述:CPLD - 复杂可编程逻辑器件 3.3V 4M 120ns RoHS:否 制造商:Lattice 系列: 存储类型:EEPROM 大电池数量:128 最大工作频率:333 MHz 延迟时间:2.7 ns 可编程输入/输出端数量:64 工作电源电压:3.3 V 最大工作温度:+ 90 C 最小工作温度:0 C 封装 / 箱体:TQFP-100
PSD4235G2V-90U 功能描述:CPLD - 复杂可编程逻辑器件 3.3V 4M 90ns RoHS:否 制造商:Lattice 系列: 存储类型:EEPROM 大电池数量:128 最大工作频率:333 MHz 延迟时间:2.7 ns 可编程输入/输出端数量:64 工作电源电压:3.3 V 最大工作温度:+ 90 C 最小工作温度:0 C 封装 / 箱体:TQFP-100