Datasheet > 80C32-12D

80C32-12D

更新时间： 2024-01-01 04:19:03

品牌	Logo	应用领域
TEMIC		微控制器
页数	文件大小	规格书
20页	227K
描述
CMOS 0 to 44 MHz Single-chip 8 Bit Microcontroller

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80C32-12D 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	QCCJ, LDCC44,.7SQ	Reach Compliance Code：	unknown
风险等级：	5.84	Is Samacsys：	N
位大小：	8	CPU系列：	8051
JESD-30 代码：	S-XQCC-J44	JESD-609代码：	e0
端子数量：	44	最高工作温度：	125 °C
最低工作温度：	-55 °C	封装主体材料：	CERAMIC
封装代码：	QCCJ	封装等效代码：	LDCC44,.7SQ
封装形状：	SQUARE	封装形式：	CHIP CARRIER
电源：	5 V	认证状态：	Not Qualified
RAM（字节）：	256	ROM（单词）：	0
筛选级别：	38535Q/M;38534H;883B	速度：	12 MHz
子类别：	Microcontrollers	最大压摆率：	35 mA
标称供电电压：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	MILITARY
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
Base Number Matches：	1

80C32-12D 数据手册

MATRA MHS

80C32/80C52

When the port latch contains a 0, all pFETS in figure 4 are

off while the nFET is turned on. When the port latch

makes a 0-to-1 transition, the nFET turns off. The strong

pFET, T1, turns on for two oscillator periods, pulling the

output high very rapidly. As the output line is drawn high,

pFET T3 turns on through the inverter to supply the IOH

source current. This inverter and T form a latch which

holds the 1 and is supported by T2.

Figure 5. Crystal Oscillator.

When Port 2 is used as an address port, for access to

external program of data memory, any address bit that

contains a 1 will have his strong pullup turned on for the

entire duration of the external memory access.

To drive the device from an external clock source,

XTAL1 should be driven while XTAL2 is left

unconnected as shown in figure 6. There are no

requirements on the duty cycle of the external clock

signal, since the input to the internal clocking circuitry is

through a divide-by-two flip-flop, but minimum and

maximum high and low times specified on the Data Sheet

must be observed.

When an I/O pin on Ports 1, 2, or 3 is used as an input, the

user should be aware that the external circuit must sink

current during the logical 1-to-0 transition. The

maximum sink current is specified as ITL under the D.C.

Specifications. When the input goes below

approximately 2 V, T3 turns off to save ICC current. Note,

when returning to a logical 1, T2 is the only internal

pullup that is on. This will result in a slow rise time if the

user’s circuit does not force the input line high.

Figure 6. External Drive Configuration.

Oscillator Characteristics

XTAL1 and XTAL2 are the input and output respectively,

of an inverting amplifier which is configured for use as an

on-chip oscillator, as shown in figure 5. Either a quartz

crystal or ceramic resonator may be used.

Hardware Description

Same as for the 80C51, plus a third timer/counter :

that a 1-to-0 transition at external input T2EX causes the

current value in the Timer 2 registers, TL2 and TH2, to

be captured into registers RCAP2L and RCAP2H,

respectively, (RCAP2L and RCAP2H are new Special

Function Register in the 80C52). In addition, the

transition at T2EX causes bit EXF2 in T2CON to be set,

and EXF2, like TF2, can generate an interrupt.

Timer/Event Counter 2

Timer 2 is a 16 bit timer/counter like Timers 0 and 1, it

can operate either as a timer or as an event counter. This

is selected by bit C/T2 in the Special Function Register

T2CON (Figure 1). It has three operating modes :

“capture”, “autoload” and “baud rate generator”, which

are selected by bits in T2CON as shown in Table 2.

Table 2 : Timer 2 Operating Modes.

RCLK +

In the capture mode there are two options which are

selected by bit EXEN2 in T2CON; If EXEN2 = 0, then

Timer 2 is a 16 bit timer or counter which upon

overflowing sets bit TF2, the Timer 2 overflow bit, which

can be used to generate an interrupt. If EXEN2 = 1, then

Timer 2 still does the above, but with the added feature

CP/RL2

TR2

MODE

TCLK

16 bit auto-reload

16 bit capture

baud rate generator

(off)

Rev. E (31/08/95)

1...4 5 678 9 10...20

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