參數(shù)資料
型號: MCHRC705JJ7CPE
廠商: Freescale Semiconductor
文件頁數(shù): 35/164頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 224 BYTES RAM 20PDIP
標(biāo)準(zhǔn)包裝: 18
系列: HC05
核心處理器: HC05
芯體尺寸: 8-位
速度: 2.1MHz
連通性: SIO
外圍設(shè)備: POR,溫度傳感器,WDT
輸入/輸出數(shù): 14
程序存儲器容量: 6KB(6K x 8)
程序存儲器類型: OTP
RAM 容量: 224 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-DIP(0.300",7.62mm)
包裝: 管件
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
13
Chapter 1
General Description
1.1 Introduction
The MC68HC705JJ7 and MC68HC705JP7 are erasable programmable read-only memory (EPROM)
versions of the MC68HC05JJ/JP Family of microcontrollers (MCU).
1.2 Features
Features of the two parts include:
Low-cost, M68HC05 core MCU in 20-pin package (MC68HC705JJ7) or 28-pin package
(MC68HC705JP7)
6160 bytes of user EPROM, including 16 bytes of user vectors
224 bytes of low-power user random-access memory (RAM)
64 bits of personality EPROM (serial access)
16-bit programmable timer with input capture and output compare
15-stage core timer, including 8-bit free-running counter and 4-stage selectable real-time interrupt
generator
Simple serial input/output port (SIOP) with interrupt capability
Two voltage comparators, one of which can be combined with the 16-bit programmable timer to
create a 4-channel, single-slope analog-to-digital (A/D) converter
Output of voltage comparator can drive port pin PB4 directly under software control
14 input/output (I/O) lines (MC68HC705JJ7) or 22 I/O lines (MC68HC705JP7), including
high-source/sink current capability on 6 I/O pins (MC68HC705JJ7) or 14 I/O pins
(MC68HC705JP7)
Programmable 8-bit mask option register (MOR) to select mask options found in read-only memory
(ROM) based versions
MOR selectable software programmable pulldowns on all I/O pins and keyboard scan interrupt on
four I/O pins
Software mask and request bit for IRQ interrupt with MOR selectable sensitivity on IRQ interrupt
(edge- and level-sensitive or edge-only)
On-chip oscillator with device option of crystal/ceramic resonator or resistor-capacitor (RC)
operation and MOR selectable shunt resistor, 2 M
by design
Internal oscillator for lower-power operation, approximately 100 kHz (500 kHz selected as device
option)
EPROM security bit(1) to aid in locking out access to programmable EPROM array
MOR selectable computer operating properly (COP) watchdog system
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the EPROM/OTPROM
difficult for unauthorized users.
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