XC68HC705B32CFN Freescale Semiconductor, XC68HC705B32CFN Datasheet - Page 226

• Manufacturer Part Number: XC68HC705B32CFN
• Description: IC MCU 2.1MHZ 32K OTP 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of XC68HC705B32CFN

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 256 x 8
• Ram Size: 528 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

14
(1) This register is implemented in EPROM; therefore reset has no effect on the individual bits.
F.4.4
RTIM — Reset time
This bit can modify the time t
RWAT — Watchdog after reset
This bit can modify the status of the watchdog counter after reset. Usually, the watchdog system
is disabled after power-on or external reset but when this bit is set, it will be active immediately
after the following resets (except in bootstrap mode).
WWAT — Watchdog during WAIT mode
This bit can modify the status of the watchdog counter in WAIT mode. Normally, the watchdog
system is disabled in WAIT mode but when this bit is set, the watchdog will be active in WAIT
mode.
PBPD — Port B pull-down
This bit, when programmed, connects a resistive pull-down on each pin of port B. This pull-down,
R
Freescale
F-8
PD
Mask option register (MOR)
, is active on a given pin only while it is an input.
1 (set)
0 (clear) –
Mask option register
–
E1ERA E1LAT E1PGM
t
t
0
0
0
1
1
PORL
PORL
(1)
Table F-3 EEPROM control bits description
= 16 cycles.
= 4064 cycles.
PORL
0
1
1
1
1
Address
$3DFE
, where the RESET pin is kept low after a power-on reset.
0
0
1
0
1
bit 7
MC68HC705B16N
Read condition
Ready to load address/data for program/erase
Byte programming in progress
Ready for byte erase (load address)
Byte erase in progress
bit 6
bit 5
Description
RTIM RWAT WWAT PBPD PCPD Not affected
bit 4
bit 3
bit 2
bit 1
MC68HC05B6
bit 0
Rev. 4.1
on reset
State